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Morphological Variation in a Population of the Snake, Tantilla gracilis Baird and Girard
By Laurence M. Hardy and Charles J. Cole
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Morphological Variation in a Population of the Snake, Tantilla gracilis Baird and Girard - Laurence M. Hardy
Laurence M. Hardy, Charles J. Cole
Morphological Variation in a Population of the Snake, Tantilla gracilis Baird and Girard
EAN 8596547338130
DigiCat, 2022
Contact: DigiCat@okpublishing.info
Table of Contents
INTRODUCTION
Materials and Methods
RESULTS
General Characteristics
Sex
Measurements
Supralabials
Infralabials
Preoculars
Postoculars
Temporals
Nasal
Contact of prefrontal with supralabials
Supralabials entering orbit
Contact of mental with chin-shields
Dorsal scale rows
Anal plate
Ventrals
Subcaudals
Ventrals minus subcaudals
Additional scale characteristics
Maxillary characteristics (Figs. 4 and 5)
Discussion and Conclusions
LITERATURE CITED
INTRODUCTION
Table of Contents
Variation of selected taxonomic characteristics of flat-headed snakes (Tantilla gracilis Baird and Girard) from several midwestern states was studied by Force (1935), but she did not attempt a comprehensive evaluation. Taylor (1936) reported on variation in T. gracilis from various localities in Kansas; Kirn, Burger, and Smith (1949) studied selected structures of specimens of T. gracilis from throughout its range. The present study was undertaken to determine the variation in both currently used and potential taxonomic characteristics of T. gracilis from one locality.
We are thankful to Charles W. Myers, Gorgas Memorial Laboratory, for suggestions concerning characteristics examined. We are indebted to Drs. William G. Degenhardt, University of New Mexico, Herndon G. Dowling, New York Zoological Society, Charles H. Lowe, University of Arizona, and Richard G. Zweifel, American Museum of Natural History, for criticizing the manuscript. Dr. William E. Duellman permitted us to study specimens in the University of Kansas Museum of Natural History.
Materials and Methods
Table of Contents
The specimens examined were donated to the Museum of Natural History, University of Kansas, by the late Paul Anderson of Independence, Missouri. All specimens
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