81 



Se%'eral genera of mammals, birds, and reptiles exist in the Texan 

 region, which constitute its chief claim for distinction from the Louis- 

 S ianian ; these are — 



Mammals. 



Dicotyles (Nt.). 

 Bassaris (P. Nt.)- 



Birds. 



Geococcyx (P. S.). 



Eeptiles. 



EolhrooUa (C. S.). 

 Phrynosoma (C. S. P.). 

 Stenostoma (Nt. P.). 



None of these are peculiar: those marked (P.) being also found in the 

 Pacific; (C.) the Central ; (S.) the Sonoran ; and (Nt.) the Neotropical 

 region. Two striking species of mammals range through the Texan 

 district, viz, the jaguar and the peccary. 



V*^. Species confined to the Texan district — 21 : 



Cadncihranchiata. 

 Amblystoma texanum. 

 Anura. 



Bufo valliceps (also Mexico). 

 Chorophilus triseriatus clarkii. 

 Hyla caroliuensis semifasciata. 

 Rana areolata areolata. 



Ophidia. 



Crotalus adamanteus atrox. 



Ancistrodon piscivorus puguax. 



Elaps fulvius tener. 



Tautilla gracilis. 



Tantilla hallowellii. 



Tantilla nigriceps. 



Contia episcopa. 



Ophiboliis doliatus aunulatus. 



Diado[)his punctatus stictogeuys. 



Coluber iindheimerii. 

 6 H 



