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Revised Checklist Of North American Mammals North Of Mexico, 1979, J. Knox Jones Jr., Dilford C. Carter, Hugh H. Genoways
Revised Checklist Of North American Mammals North Of Mexico, 1979, J. Knox Jones Jr., Dilford C. Carter, Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
Faunal checklists provide useful ready references for many kinds of endeavors, both in the laboratory and in the field, and are particularly helpful to students. Since publication more than four years ago of a "Revised checklist of North American mammals north of Mexico" (Jones et al., 1975), demand for that list has exceeded the supply set aside for general distribution; additionally, systematic studies of mammals published since 1974 necessitate changes in the list. Primarily for these reasons, a newly revised checklist of mammalian species occurring in the Nearctic to the north of Mexico is here presented. As in this and …
Variation In Pappogeomys Castanops (Geomyidae) On The Llano Estacado Of Texas And New Mexico, Robert C. Dowler, Hugh H. Genoways
Variation In Pappogeomys Castanops (Geomyidae) On The Llano Estacado Of Texas And New Mexico, Robert C. Dowler, Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
Nongeographic and geographic variation in the yellow-cheeked pocket gopher, Pappogeomys castanops, were analyzed in specimens collected in northwestern Texas and eastern New Mexico. Univariate and multivariate methods of analysis were utilized to assess variation in morphometric characters among 12 samples of P. castanops. Because of significant variation with age, only adult specimens were used in analyses. Adult males were significantly larger than females in all 13 characters studied. Our analyses of geographic variation reveal that those specimens previously assigned to the subspecies P. c. simulans are not sufficiently distinct to warrant subspecific designation.
Records Of Bats (Mammalia: Chiroptera) From Suriname, Hugh H. Genoways, Stephen L. Williams
Records Of Bats (Mammalia: Chiroptera) From Suriname, Hugh H. Genoways, Stephen L. Williams
University of Nebraska State Museum: Mammalogy Papers
Ten species are added to the 60 species of bats already known to occur in Suriname. The species added include Micronycteris minuta, M. nicefori, Phylloderma stenops, Tonatia bidens, T. brasiliense, Carollia brevicauda, Chiroderma trinitatum, Vampyressa bidens, Promops centralis, and P. nasutus. Additional information is presented on five species previously recorded from Suriname, including Pteronotus parnellii, Mimon crenulatum, Artibeus concolor, Chiroderma villosum, and Sturnira tildae.
Specialized Insectivory: Beetle-Eatinga Nd Moth-Eating Molossid Bats, Patricia W. Freeman
Specialized Insectivory: Beetle-Eatinga Nd Moth-Eating Molossid Bats, Patricia W. Freeman
University of Nebraska State Museum: Mammalogy Papers
The structure and mechanics of insectivores have been little studied. An effort is made here to compare and contrast jaw characteristics of insectivorous bats with those of herbivores and carnivores. Further, in one particular family of bats (Molossidae) jaw modifications are such that animals that take hard-shelled insect prey can be distinguished from those that take soft-shelled insect prey. Beetle-eaters generally have thick jaws, well-developed cranial crests, and fewer but bigger teeth, whereas moth-eaters have thin jaws, little crest build-up, and more but smaller teeth.
A Study Of Nongeographic Variation In Tatera Leucogaster (Mammalia: Rodentia) From Botswana, Pierre Swanepoel, Duane A. Schlitter, Hugh H. Genoways
A Study Of Nongeographic Variation In Tatera Leucogaster (Mammalia: Rodentia) From Botswana, Pierre Swanepoel, Duane A. Schlitter, Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
Specimens of Tatera leucogaster from six localities in Botswana were tested for variation with age, secondary sexual variation, and individual variation. Of the six age classes recognized, categories I, II, and III each formed their own group, whereas cat egories IV, V, and VI were not separable on a morphometric basis and were considered to be adults. Significant secondary sexual variation was found only in depth of braincase in which females were larger. The only character exhibiting unusually high individual variation was length of posterior palatal foramen. All other characters exhibited individual variation within acceptable limits.
A Systematic Review Of The Olive-Backed Pocket Mouse, Perognathus Fasciatus (Rodentia, Heteromyidae), Daniel F. Williams, Hugh H. Genoways
A Systematic Review Of The Olive-Backed Pocket Mouse, Perognathus Fasciatus (Rodentia, Heteromyidae), Daniel F. Williams, Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
Geographic variation in Perognathus fasciatus Wied and the identities of specimens of P. fasciatus and P. flavescens from areas of potential sympatry were investigated. Populations of P. fasciatus from the northern Great Plains, in areas with the highest amounts of precipitation, were the darkest colored and had proportionately the smallest auditory bullae. Size varied clinally in the Great Plains, with larger mice being found in the cooler, northern latitudes. Populations from the arid intermountain basins of Colorado, Utah, and Wyoming were largest in size, had the longest tails, were the palest in color, and had the largest bullae. Two races …
Redescription And Comparison Of A Highly Fossorial Mole, Domninoides Mimicus (Insectivora, Talpidae), From The Clarendonian, Patricia W. Freeman
Redescription And Comparison Of A Highly Fossorial Mole, Domninoides Mimicus (Insectivora, Talpidae), From The Clarendonian, Patricia W. Freeman
University of Nebraska State Museum: Mammalogy Papers
The holotype of the species, Domninoides mimicus, is based on one tooth. Described in the present report is material containing a practically complete dentition and many postcranial elements which definitely belong with the teeth. This species is closely related to Domninoides valentinensis described by Reed (1962), but some of the antemolars in valentinensis are misidentified. The tooth formulas for valentinensis and for mimicus are given. Development of the cingula on the upper and lower molars in mimicus is conspicuous. Because of similar features in the postcranial bones, the Clarendonian mole may be as fossorial as Scalopus, probably the …
Morphometrics [Of Phyllostomatid Bats], Pierre Swanepoel, Hugh H. Genoways
Morphometrics [Of Phyllostomatid Bats], Pierre Swanepoel, Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
In this paper, we have attempted to cite all relevant literature in which mensural
data pertaining to phyllostomatid bats has appeared. We are not so naive as to
believe this goal was reached, but we do believe most pertinent publications
are listed, including all major works relating to each species. This information
serves as a summary of what currently is known concerning morphometrics of
phyllostomatids and hopefully provides a basis for future morphometric studies
of members of the family.
Rabbits (Genus Sylvilagus) Of Nicaragua, Terry L. Yates, Hugh H. Genoways, J. Knox Jones Jr.
Rabbits (Genus Sylvilagus) Of Nicaragua, Terry L. Yates, Hugh H. Genoways, J. Knox Jones Jr.
University of Nebraska State Museum: Mammalogy Papers
The rabbits (genus Sylvilagus) of Nicaragua are herein reviewed systematically. Geographic and nongeographic variation has been assessed based on examination of 124 museum specimens constituting 28 samples of Sylvilagus floridanus from Honduras, Nicaragua, and Costa Rica, and 15 samples of S. brasiliensis from Nicaragua and Costa Rica. Morphological features of the skin and skull were analyzed using various univariate and multivariate statistical techniques. Analysis of geographic variation in S. floridanus indicates that rabbits of this species in Nicaragua are referable to the subspecies S. f. costaricensis, rather than to S. f. hondurensis as previously believed. Based on our …
Sperm Morphology, G. Lawrence Forman, Hugh H. Genoways
Sperm Morphology, G. Lawrence Forman, Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
Bishop and Austin (1957) in their study of variation in mammalian spermatozoa suggested that the sperm of each mammalian species was probably unique. Although complete volumes have been written on the ultrastructure of spermatozoa (for example Baccetti, 1970), particularly of humans and domestic animals, there is still relatively little information available on the comparative gross morphology of spermatozoa. McFarlane (1963), Forman (1968), and Forman et at. (1968) made significant contributions to our understanding of the use of sperm morphology in establishing systematic and phylogenetic relationships of birds and mammals. However, there have been very few similar studies published to this …