81 



Several genera of mammals, birds, aud reptiles exist iu the Texan 

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

 ianian ; these are — 



Mammals. 



Dicotyles (Jst.). 

 Bassaris (P. Nt.). 



Birds. 



Geococcyx (P. S.). • 



Eeptiles. 



EolbrooJcia (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 aud the peccary. 



V". Species confined to the Texan district — 21 : 



Cadiieibranchiata. 

 Amblystoma texanum. 

 Anura. 



Bufo valliceps (also Mexico). 

 Chorophilus triseriatus clarkii. 

 Hyla carolinensis semifasciata. 

 Eana areolata areolata. 



Ophidia. 



Crotalus adamanteus atrox. 



Ancistrodon piscivorus pugnax. 



Elaps fulvius teuer. 



Tantilla gracilis. 



Tantilla hallowellii. 



Tantilla nigriceps. 



Contia episcopa. 



Ophibolus doliatns anuulatus. 



Diadoi)his punctatus stictogenys. 



Coluber iindheimerii. 

 6 H 



