Author
E. Raymond (Eugene Raymond) Hall
1902-1986
E. Raymond (Eugene Raymond) Hall (1902-1986) is a public-domain author available on Rivro. Read free books, explore subjects, and discover related classics.
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Books by E. Raymond (Eugene Raymond) Hall
American Weasels
"American Weasels" by E. Raymond Hall is a scientific publication written in the early 21st century. This comprehensive work provides an in-depth study of the genus Mustela, focusing on the variations and characteristics of American weasels, and includes an extensive exploration of their anatomy, behavior, and ecology. It sheds light on the significant role these small carnivores play within their ecosystems, as well as detailing their interaction with humans. The opening of the book establishes a detailed framework of the weasel's structural features and behaviors, primarily emphasizing the agility and hunting prowess of the long-tailed weasel ("Mustela frenata"). Hall describes the physical characteristics and seasonal coloration changes of weasels, such as their brown summer and white winter pelage, which aid in their survival. He introduces the idea of how environmental factors, geographic distribution, and behavior influence their adaptations, while also hinting at the biological and ecological significance of studying their variances and interactions in their natural habitats.
A Synopsis of the North American Lagomorpha
"A Synopsis of the North American Lagomorpha" by E. Raymond Hall is a scientific publication written in the early 20th century. This work focuses on the various species of lagomorphs, including rabbits, hares, and pikas native to North America. It aims to consolidate existing knowledge on the taxonomy and geographic distribution of these mammals while providing critical insights into their biology and ecological significance. The opening of the book introduces the topic by highlighting the significant role that rabbits and hares play as small game in North America, along with their importance in scientific research related to public health. Hall notes the increasing inquiries from researchers regarding the taxonomy and relations of these species. He outlines the aims of the synopsis to centralize updated taxonomic arrangements and geographic data, complemented by visual aids like maps and illustrations. Additionally, Hall addresses the challenges in identifying species based on morphological features, emphasizing the relevance of geographic factors in understanding these animals' diversity.
An Annotated Check List of the Mammals of Michoacán, México
"An Annotated Check List of the Mammals of Michoacán, México" by E. Raymond Hall and Bernardo Villa R. is a scientific publication written in the mid-20th century. The work aims to document the various species of mammals found in Michoacán, detailing their descriptions, ranges, and relevant observations. Through meticulous fieldwork, the authors seek to enhance the understanding of the region's biodiversity. The opening portion of this publication introduces the context of a research initiative facilitated by the administration of President Lázaro Cardenas, aimed at documenting cultural and natural resources in Mexico. Following an invitation to investigate the mammals of Michoacán, Hall, along with Villa and others, conducted extensive fieldwork in 1943 across multiple locations, such as Pátzcuaro and Tacámbaro. The authors outline their goals—recording mammal species' scientific and vernacular names, geographic ranges, and circumstantial information useful for future studies, while also citing previous collections and collaborations that enrich their findings. The initial chapters set the stage for a detailed examination of the region's mammalian fauna, with references to specific specimens and observations that indicate an ongoing commitment to further investigation and documentation.
A Synopsis of the American Bats of the Genus Pipistrellus
"A Synopsis of the American Bats of the Genus Pipistrellus" by E. Raymond Hall and Walter W. Dalquest is a scientific publication produced in the mid-20th century. This work focuses primarily on the classification and geographic distribution of American bats belonging to the genus Pipistrellus. The authors provide a detailed examination of four nominal species recognized in North America, discussing their systematic status and making significant contributions based on recent specimen studies. The content of the book details the characteristics of the genus Pipistrellus, highlighting two distinct species—Pipistrellus hesperus and Pipistrellus subflavus. The publication examines their physical traits, such as size, coloration, and anatomical features, while also providing a comparative analysis of their distribution across North America and parts of Mexico. The authors emphasize their principal findings, including the reclassification of some species as subspecies and the identification of previous misclassifications, thereby contributing to the broader understanding of bat taxonomy and ecology in the region.
North American Yellow Bats, 'Dasypterus,' and a List of the Named Kinds of the Genus Lasiurus Gray
"North American Yellow Bats, 'Dasypterus,' and a List of the Named Kinds of the Genus Lasiurus Gray" by E. Raymond Hall and J. Knox Jones, Jr. is a scientific publication released in the early 1960s, particularly in December 1961. This work is focused on the taxonomy and species classification of yellow bats, specifically the genus Dasypterus and related taxa, underlining the identification and descriptions of various species found in North America. The text is a detailed examination of yellow bats, particularly the species under the genus Lasiurus. It provides a comprehensive overview of their taxonomy, geographic distribution, morphology, and life history. The authors discuss the various species of yellow bats such as Lasiurus ega (Southern Yellow Bat) and Lasiurus intermedius (Northern Yellow Bat), comparing their physical characteristics, habitats, and breeding patterns. The publication serves as an important resource for entomologists and biologists interested in Chiropteran zoology, particularly those studying the biodiversity and classification of bats in the Americas.
Seventeen Species of Bats Recorded from Barro Colorado Island, Panama Canal Zone
"Seventeen Species of Bats Recorded from Barro Colorado Island, Panama Canal Zone" by E. Raymond Hall and William B. Jackson is a scientific publication written in the early 1950s. This book focuses on documenting the various species of bats identified on Barro Colorado Island, a unique ecological area within the Panama Canal Zone, detailing the researchers' efforts and findings during their study of these mammals. In this publication, the authors aim to update and improve the existing list of bat species on the island, following up on earlier research. They detail the methods used for capturing bats, such as the use of a silk net to intercept them during nighttime, and provide observational data on their behavior and habitat preferences. The text includes a systematic account of the seventeen species discovered, with descriptions based on captured specimens, including their weights and breeding conditions. The findings contribute to understanding the biodiversity of the region and the ecological significance of bats, emphasizing conservation efforts to maintain the island's natural conditions.
Mammals Obtained by Dr. Curt von Wedel from the Barrier Beach of Tamaulipas, Mexico
"Mammals Obtained by Dr. Curt von Wedel from the Barrier Beach of Tamaulipas, Mexico" by E. Raymond Hall is a scientific publication written in the early 1950s. This book is primarily concerned with the study of mammal species found along the coastal barrier beach of Tamaulipas and examines the ecological and taxonomic relationships of these species to their mainland and island counterparts. The work presents findings from a research expedition that took place in March 1950, highlighting the unique characteristics of these mammals and their habitats. The publication details the observations made during the expedition, including specific species collected such as the spotted ground squirrel, Ord kangaroo rat, hispid cotton rat, and black-tailed jack rabbit. Hall discusses the methodologies employed in capturing and studying these mammals, alongside detailed descriptions and comparisons with related taxa. The work not only includes data on the physical characteristics of the specimens but also addresses their distribution, behavior, and ecological significance within the barrier beach environment. Through this comprehensive examination, Hall contributes valuable insights into the biodiversity of the region and the distinctiveness of the mammals inhabiting the barrier beach of Tamaulipas.
Comments on the Taxonomy and Geographic Distribution of Some North American Rodents
"Comments on the Taxonomy and Geographic Distribution of Some North American Rodents" by E. Raymond Hall and Keith R. Kelson is a scientific publication released in the early 1950s. This work discusses the classification and geographic distribution of various rodent species across North America. The book serves as a detailed examination of inconsistencies in existing literature regarding the taxonomy of North American rodents and provides new insights based on specimen evaluations. The content of the book primarily focuses on the analysis of rodent specimens and their classification into different subspecies based on geographic characteristics, physical traits, and distribution patterns. The authors carefully examine several rodent taxa, including specific chipmunks and squirrels, discussing their morphological characteristics and comparing specimens from various localities. Through systematic comparisons and taxonomic revisions, the book offers a clearer understanding of the biodiversity and distribution of these rodents, contributing valuable information to the field of mammalogy and aiding in the identification and conservation of North American rodent species.
A New Doglike Carnivore, Genus Cynarctus, From the Clarendonian, Pliocene, of Texas
"A New Doglike Carnivore, Genus Cynarctus, From the Clarendonian, Pliocene, of Texas" by E. Raymond Hall and Walter W. Dalquest is a scientific publication written in the early 1960s. This work presents findings on a newly identified species of carnivore from the Pliocene epoch, focusing specifically on the genus Cynarctus. The paper likely targets readers interested in paleontology, taxonomy, and the evolutionary history of canine species. The study introduces the species "Cynarctus fortidens", characterized by specific dental features including a large size and unique cusp formations in its teeth that suggest a frugivorous diet. The research details the examination of fossilized remains, highlighting the holotype and additional referred material found in Texas. The authors compare "C. fortidens" with other known species, discussing its potential classification within the family Canidae and analyzing morphological traits that differentiate it from related species. This paper contributes to the understanding of carnivore evolution and dietary adaptations during the Pliocene.
Two New Meadow Mice from Michoacán Mexico
"Two New Meadow Mice from Michoacán Mexico" by E. Raymond Hall is a scientific publication written in the late 1940s. This work belongs to the field of zoology and specifically focuses on the taxonomy and description of two new subspecies of meadow mice found in Michoacán, Mexico. The book provides detailed observations and comparisons based on specimens collected in the region. The publication details the identification and analysis of two new subspecies of the Mexican meadow mouse, "Microtus mexicanus fundatus" and "Microtus mexicanus salvus". Hall presents a thorough examination of their physical characteristics, such as size, color, and skull structure, comparing them to closely related subspecies. The observations were based on various specimens gathered in the vicinity of Pátzcuaro and Mount Tancitaro, highlighting the ecological context and habitat where these mice were discovered. The work is significant in contributing to the understanding of mammalian diversity in the region, documenting specific traits that differentiate these newly identified subspecies from others in the genus.
A New Subspecies of Microtus montanus from Montana and Comments on Microtus canicaudus Miller
"A New Subspecies of Microtus montanus from Montana and Comments on Microtus canicaudus Miller" by E. Raymond Hall and Keith R. Kelson is a scientific publication written in the early 1950s. This work is focused on the field of mammalogy, specifically dealing with the taxonomy and classification of vole species in Montana. The book presents a detailed examination of a newly identified subspecies of the Microtus montanus, contributing to the understanding of species diversity in this region. In the publication, Hall and Kelson describe the characteristics and morphological distinctions of the newly identified subspecies, named Microtus montanus pratincolus, based on specimens collected in Montana's Bitterroot Valley. They compare this subspecies to related forms, highlighting its smaller size and distinct anatomical features, particularly the shape and inflation of the tympanic bullae. Additionally, the authors discuss the taxonomy of another subspecies, Microtus montanus canicaudus, providing insights into its distribution and morphological characteristics, as well as clarifying previous identification errors. The book emphasizes the importance of precise taxonomical classifications in understanding biodiversity and the characteristics that define specific animal populations in the region.
Comments on the Taxonomy and Geographic Distribution of Some North American Rabbits
"Comments on the Taxonomy and Geographic Distribution of Some North American Rabbits" by E. Raymond Hall and Keith R. Kelson is a scientific publication written in the early 1950s. This work is focused on the taxonomy and geographic distribution of various species of North American rabbits, particularly within the genera Sylvilagus. As a scholarly article, it delves into specific classifications, regional differences, and morphological comparisons among species, contributing to the field of mammalogy. The authors meticulously examine different specimens of rabbits, particularly the Florida cottontail and Audubon cottontail, to clarify existing taxonomic confusions identified in earlier literature. They conduct comparative analyses of physical characteristics such as skull morphology to distinguish species and subspecies. Important geographical data are provided through maps, reinforcing the understanding of their habitat ranges. The research includes detailed descriptions of a variety of subspecies, such as Sylvilagus floridanus similis and Sylvilagus nuttallii grangeri, highlighting their differences and the potential for intergradation. Overall, this publication serves as a valuable reference for researchers working in mammalian taxonomy and conservation biology.
Comments on the Taxonomy and Geographic Distribution of Some North American Marsupials, Insectivores and Carnivores
"Comments on the Taxonomy and Geographic Distribution of Some North American Marsupials, Insectivores and Carnivores" by E. Raymond Hall and Keith R. Kelson is a scientific publication that was likely written in the early 1950s. This work focuses on the classification and geographical distribution of select mammals in North America, particularly marsupials, insectivores, and carnivores. It aims to resolve discrepancies in the existing literature concerning the taxonomy of these animals through detailed examination of specimens and relevant research. The book provides an extensive review of several species, offering detailed taxonomic classifications and geographic ranges based on examined specimens and existing collections. Using various case studies, the authors clarify the identity of specific subspecies, illustrate interrelations among them, and correct previous misidentifications. The text includes an exploration of the characteristics and variations among specimens, contributing significantly to the understanding of North American mammalian diversity and distribution. Through maps and illustrations, the authors present a scientific basis for understanding the biodiversity of these groups, while suggesting that further study may expand or contract classifications depending on geographic variations.
Pipistrellus cinnamomeus Miller 1902 Referred to the Genus Myotis
"Pipistrellus cinnamomeus Miller 1902 Referred to the Genus Myotis by Hall et al." by E. Raymond Hall and Walter W. Dalquest is a scientific publication written in the mid-20th century. This text discusses the taxonomic classification and detailed examination of a particular species of bat, specifically "Pipistrellus cinnamomeus", and its reassignment to the genus "Myotis". The work highlights the anatomical and morphological comparisons that led to the taxonomic changes and provides a comprehensive account of the bat specimens examined. The book primarily details the history surrounding the naming of "Pipistrellus cinnamomeus", including the original description by G. S. Miller in 1902, based on limited specimens collected in Mexico. It elaborates on additional specimens discovered later which contributed to a better understanding of this bat species. Key distinguishing features from other related species—such as the presence of two premolars instead of three—are detailed. The authors ultimately argue for the reclassification of "Pipistrellus cinnamomeus" as "Myotis fortidens", analyzing its geographical distribution and notable physical characteristics, while emphasizing the need for further research to understand the relationship between various "Myotis" species comprehensively.
Comments on the Taxonomy and Geographic Distribution of North American Microtines
"Comments on the Taxonomy and Geographic Distribution of North American Microtines" by E. Raymond Hall and E. Lendell Cockrum is a scientific publication written in the early 1950s. The book focuses on the classification and geographic ranges of North American microtines, a group of small rodent-like mammals, particularly voles and lemmings. It reflects a meticulous examination of existing literature and specimens to resolve discrepancies in microtine taxonomy. In their work, Hall and Cockrum systematically review various subspecies of microtines, sharing their findings on several species such as Synaptomys cooperi and Clethrionomys gapperi. They analyze taxonomic classifications, document specimen measurements, and provide geographic distribution data to clarify the relationships and range of these rodents. Ultimately, the publication offers valuable insights into the complexities of microtine taxonomy and biology, serving as a crucial resource for researchers in mammalogy and related fields.
A New Subspecies of Pocket Mouse from Kansas
"A New Subspecies of Pocket Mouse from Kansas" by E. Raymond Hall is a scientific publication written in the mid-20th century. This concise work focuses on the identification and description of a newly recognized subspecies of pocket mouse, specifically the "Perognathus flavescens cockrumi", found in south-central Kansas and parts of Oklahoma. The text falls within the field of zoology and taxonomy, contributing to the study of mammalian biodiversity in North America. In this publication, Hall presents detailed descriptions and comparisons of the new subspecies, highlighting its physical characteristics such as size, color, and skull structure. He differentiates "Perognathus flavescens cockrumi" from other subspecies by examining various specimens, discussing aspects like coloration and morphology. This work not only honors the contributions of Dr. E. Lendell Cockrum to the study of Kansas mammals but also provides a thorough analysis of the geographical distribution of this pocket mouse, contributing valuable information to the field of mammalogy and ecology.
A New Pocket Gopher (Genus Thomomys) From Wyoming and Colorado
"A New Pocket Gopher (Genus Thomomys) From Wyoming and Colorado" by E. Raymond Hall is a scientific publication written in the early 1950s. This book presents a detailed description and classification of a new subspecies of pocket gopher found in the Sierra Madre Mountain Range of Wyoming and Colorado. The focus is on contributing to the field of natural history, specifically the taxonomy of small mammals. In this publication, Hall introduces the new subspecies, named Thomomys talpoides meritus, based on specimens collected from the region. He provides a thorough analysis of the physical characteristics, habitat, and measurements of this gopher compared to other subspecies. The study emphasizes the differences in size, color, and skull structure that distinguish T. t. meritus from its neighboring subspecies, T. t. rostralis and T. t. clusius. Overall, the work contributes valuable knowledge to the field of mammalogy and showcases the importance of detailed field research in understanding biodiversity.
A New Subspecies of the Black Myotis (Bat) from Eastern Mexico
"A New Subspecies of the Black Myotis (Bat) from Eastern Mexico" by E. Raymond Hall and Ticul Alvarez is a scientific publication written in the early 1960s. This work is a detailed taxonomic analysis of a newly identified subspecies of the black myotis bat, specifically from eastern Mexico. It chronicles the findings based on recent collections of bat specimens, expanding the known range of the species. The book mainly focuses on the description and classification of the new subspecies, designated as Myotis nigricans dalquesti. It includes detailed morphological measurements and comparisons with related subspecies, underscoring the distinguishing characteristics of dalquesti, such as its size and certain cranial features. The publication also highlights the significance of the collection efforts and acknowledges contributions from various individuals and institutions. Through precise scientific observations, the authors provide insights into the biodiversity of bats in this region and the importance of continued research in understanding species variations.
Conspecificity of two pocket mice, Perognathus goldmani and P. artus
"Conspecificity of two pocket mice, Perognathus goldmani and P. artus" by E. Raymond Hall and Marilyn Bailey Ogilvie is a scientific publication produced in the late 1950s. This work explores the taxonomic relationship between two species of pocket mice, analyzing their morphological traits and geographical distribution. It contributes to the understanding of the species within the broader Perognathus intermedius group, focusing particularly on the intergradation of the two types in southern Sonora and northern Sinaloa. In the publication, the authors examine specimens collected from various locations, noting significant measurable differences between the two species, such as size and skull structure. The study finds evidence of intergradation in the populations, leading to the conclusion that Perognathus artus should be classified as a subspecies of Perognathus goldmani. The research includes detailed descriptions of the physical characteristics of the mice, maps of their geographic distribution, and discussions on individual variation among the specimens, emphasizing the need for further study into related species to refine taxonomic understanding.
A New Pocket Gopher (Genus Thomomys), from Eastern Colorado
"A New Pocket Gopher (Genus Thomomys), from Eastern Colorado" by E. Raymond Hall is a scientific publication written in the early 1950s. This work represents a study focused on the taxonomy of pocket gophers, specifically examining previously misclassified specimens from east-central Colorado and proposing a new subspecies. The text is aimed at scholars and researchers in the field of mammalogy and provides detailed anatomical and geographic information regarding this rodent species. In this publication, Hall identifies and describes a new subspecies of the pocket gopher, named "Thomomys talpoides retrorsus", which was discovered in the region of eastern Colorado. By analyzing specimens and their characteristics, Hall distinguishes this subspecies from others previously categorized and offers a thorough comparison based on various skull measurements, coloration, and other anatomical features. The study not only clarifies the subspecific identity of these gophers but also addresses previous taxonomic confusion, contributing valuable knowledge to the understanding of mammalian diversity in North America.
A New Pocket Gopher (Thomomys) and A New Spiny Pocket Mouse (Liomys) from Michoacán, Mexico
"A New Pocket Gopher (Thomomys) and A New Spiny Pocket Mouse (Liomys) from Michoacán, Mexico" by E. Raymond Hall and Bernardo Villa R. is a scientific publication written in the mid-20th century. This work focuses on the taxonomic identification and description of two previously unrecognized subspecies of rodents from the region of Pátzcuaro in Michoacán, Mexico. It presents findings from field studies and provides detailed morphological analyses of the species in question. The publication introduces the subspecies "Thomomys umbrinus pullus" and "Liomys irroratus acutus," detailing their characteristics, habitat, and distinctions from related species. The authors document the ecological context in which these animals were found, noting their coexistence in specific geological areas. Through quantitative measurements and physical descriptions, the work contributes to the understanding of species diversity in rodent populations within this geographic area, showcasing the subtle differences that account for the classification of these new subspecies. The paper is both an essential reference for mammalogists and a contribution to the broader field of wildlife biology in Mexico.
A New Bat (Myotis) From Mexico
"A New Bat (Myotis) From Mexico" by E. Raymond Hall is a scientific publication written in the early 1960s. This work is a research paper focused on the description and classification of a new species of bat identified in Mexico, contributing to the field of mammalogy and biodiversity. In this concise document, Hall presents the discovery of a previously unrecognized species of bat named "Myotis elegans", evidenced by a single specimen found in Veracruz. The paper includes detailed morphological characteristics that distinguish this species from related ones, such as its smaller skull size and unique coloration. Hall also outlines the geographic distribution of the species and provides comparative analysis with other known Myotis species. The study emphasizes the significance of this discovery in understanding bat diversity and highlights the importance of preserving the species' habitat. Overall, this work adds valuable knowledge to the study of bats in Mexico and the broader context of biodiversity research.
Taxonomic Notes on Mexican Bats of the Genus Rhogeëssa
"Taxonomic Notes on Mexican Bats of the Genus Rhogeëssa" by E. Raymond Hall is a scientific publication written in the early 1950s. This work focuses on the classification and identification of various species of bats within the genus Rhogeëssa found in Mexico. It is a scholarly examination that seeks to clarify taxonomic discrepancies and contribute to the understanding of these specific bat species. In this publication, Hall examines several specimens of Rhogeëssa bats collected from various locations across Mexico, including Sonora, Nayarit, and Veracruz. He discusses three named species: "Rhogeëssa parvula", "Rhogeëssa tumida", and "Rhogeëssa gracilis", detailing their morphological differences and geographic ranges. The study involves comparing new specimens with existing collections to assess their classification and possibly resolve any naming errors or misidentifications. Hall argues for a comprehensive understanding of the interrelationships between these species and suggests that geographical variations may lead to the conclusion that they should be considered subspecies of a single species rather than distinct entities. Overall, the work is an important contribution to the field of mammalogy and the understanding of Mexican bat diversity.
A New Name for the Mexican Red Bat
"A New Name for the Mexican Red Bat" by E. Raymond Hall is a scientific publication written in the early 1950s. The book addresses the nomenclature and classification of bat species, specifically focusing on the Mexican red bat and its proper taxonomical identification. It explores the historical context of the naming process within the family Vespertilionidae, contributing to the understanding of bat diversity in Mexico. In the publication, Hall reviews the previous classification system established by Gerrit S. Miller, Jr. and examines the discrepancies that arose from the overlapping ranges of different bat species in southern Mexico. He argues that the name previously attributed to the red bat, "A[talapha]. mexicana", should instead be associated with the hoary bat, "Lasiurus cinereus". To rectify this, Hall proposes a new subspecies designation, "Lasiurus borealis ornatus", for the Mexican red bat, providing detailed descriptions and comparisons with related species. The work highlights the intricate relationships and characteristics of various bat species, emphasizing the need for precise scientific nomenclature to enhance our understanding of biodiversity.