Download or read book Morphological Variation in a Population of the Snake Tantilla gracilis Baird and Girard written by Laurence M. Hardy and published by DigiCat. This book was released on 2022-09-16 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: DigiCat Publishing presents to you this special edition of "Morphological Variation in a Population of the Snake, Tantilla gracilis Baird and Girard" by Laurence M. Hardy, Charles J. Cole. DigiCat Publishing considers every written word to be a legacy of humankind. Every DigiCat book has been carefully reproduced for republishing in a new modern format. The books are available in print, as well as ebooks. DigiCat hopes you will treat this work with the acknowledgment and passion it deserves as a classic of world literature.

Download or read book Morphological Variation in a Population of the Snake Tantilla Gracilis Baird and Girard written by Cole Charles J and published by Hardpress Publishing. This book was released on 2016-06-23 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

Download or read book Morphological Variation in a Population of the Snake Tantilla Gracilis Baird written by Charles J Cole and published by . This book was released on 2023-11-12 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Morphological Variation in a Population of the Snake, Tantilla gracilis Baird, a classical and rare book that has been considered essential throughout human history, so that this work is never forgotten, we at Alpha Editions have made efforts in its preservation by republishing this book in a modern format for present and future generations. This whole book has been reformatted, retyped and designed. These books are not made of scanned copies of their original work and hence the text is clear and readable.

Download or read book The Amphibians and Reptiles of Arkansas written by Stanley E. Trauth and published by University of Arkansas Press. This book was released on 2004-01-01 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: The product of fifteen years of work by top herpetologists, this book is a comprehensive examination of the amphibians and reptiles of Arkansas, featuring over 136 species and subspecies. With over five hundred four-color photos, line drawings, and over one hundred maps, this user-friendly book will become the definitive text on the subject.

Download or read book University of Kansas Publications Museum of Natural History written by University of Kansas. Museum of Natural History and published by . This book was released on 1972 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Systematics of North American Colubrid Snakes Related to Tantilla Planiceps Blainville written by Charles J. Cole and published by . This book was released on 1981 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Examination of numerous characters (primarily of head coloration, hemipenes, scutellation, and size and proportions) of more than 750 specimens suggests that Tantilla planiceps, as recognized by Tanner (1966), actually represents four distinct species: Tantilla planiceps (Blainville, 1835), of southern California and Baja California; Tantilla yaquia Smith, 1942, of southeastern Arizona and northwestern Mexico; Tantilla atriceps (Günther, 1895), of southern Texas and northeastern Mexico; and Tantilla hobartsmithi Taylor, '1936' (1937), which is broadly distributed in the southwestern United States and northern Mexico and usually has been considered synonymous with T. atriceps. Synonymies, diagnoses, descriptions, illustrations, range maps, and ecological notes are presented for each of these species. Tantilla atriceps and T. hobartsmithi are sibling species with strikingly different hemipenes. They also are the only species of the complex for which sympatry (in Coahuila) has been documented. Future collecting may well demonstrate sympatry at the periphery of the ranges of T. planiceps and T. hobartsmithi and of T. yaquia and T. hobartsmithi. Analysis of variation indicates that some classical taxonomic characters used previously (e.g., number of ventral scales) are not particularly reliable for distinguishing among species of Tantilla. The best specific characters we found are in anatomy of the hemipenes. Variation in hemipenial features usually is correlated with variation in head coloration. Because T. atriceps and T. hobartsmithi are sibling species, now known to differ consistently only in hemipenial characters, and because they exhibit sympatry at the periphery of their ranges, specific identification of females is a problem that requires additional investigation. Once it appeared that male copulatory organs would provide important, diagnostic characters for the four species formerly assigned to T. planiceps, we examined hemipenes on as many specimens (258) as were reasonably available. These included pertinent type-specimens and outgroup comparisons with T. gracilis, T. nigriceps, and T. wilcoxi; hemipenes of these species are distinctive also, and examples of all are described and illustrated (excepting T. wilcoxi). One problem that remains under investigation is the specific relationship between T. atriceps and southern populations of T. nigriceps. No such problem exists between T. hobartsmithi and T. nigriceps, however, as they differ rather consistently in hemipenes and head coloration, and they are sympatric in the western part of the range of T. nigriceps. We also examined maxillary bones, sex ratio, and karyotypes (including that of T. coronata) in addition to the characters mentioned above. Most of these data are not taxonomically useful, due either to lack of significant variation or lack of comparative data from congeners. A preferred cladogram of phylogenetic relationships of T. wilcoxi, T. planiceps, T. yaquia, T. nigriceps, T. atriceps, T. hobartsmithi, and T. gracilis is presented, as is a key to all species of Tantilla known to occur in the western United States and northern Mexico. The most useful characters for distinguishing species of Tantilla, particularly in North America, appear to be in the hemipenes and head coloration. Hereafter, all taxonomic studies within Tantilla routinely should include examination of hemipenes of the specimens examined. When possible, males should be selected as type-specimens"--P. 203.

Download or read book Contributions in Biology and Geology written by and published by . This book was released on 1980 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin of the American Museum of Natural History written by Joel Asaph Allen and published by . This book was released on 1981 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprises articles on geology, paleontology, mammalogy, ornithology, entomology and anthropology.

Download or read book Public Education Series written by University of Kansas. Museum of Natural History and published by . This book was released on 1981 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catalog written by Denver Public Library. Conservation Library and published by . This book was released on 1974 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biology of the Reptilia written by Carl Gans and published by . This book was released on 1969 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contributions in Science written by and published by . This book was released on 1976 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The American Midland Naturalist written by and published by . This book was released on 1969 with total page 1300 pages. Available in PDF, EPUB and Kindle. Book excerpt: A refereed, broad-spectrum journal publishing basic research in diverse disciplines in biology and varied taxa.

Download or read book Books in Print Supplement written by and published by . This book was released on 1984 with total page 1774 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Paperbound Books in Print written by and published by R. R. Bowker. This book was released on 1984 with total page 1766 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Subject Catalog written by Library of Congress and published by . This book was released on 1965 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Library of Congress Catalogs written by Library of Congress and published by . This book was released on 1970 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: