CROCODILIANS, LIZARDS, AND bNAKES. 1223 



Eutamia riifopunctata Co])e. 



EnUvnia multimaculata Cope. 



Trimorphodon upsilon Cope. 



Trimotyhodon lambda Cope. 



Trimorphodon irHlinsonii Cope. 



Scolecophis (cmulns Cope. 



Elaps eury.ranihns Kennicott. 



GroUdus molossHs Baird and Girard. 



Grotalus scvtulatns Kennicott. 



Crofalns lepidus Kennicott. 



Crofalus cerastes Hallowell. 

 Fifty-eight species, disposed of as follows: Batrachia Salientia, two; 

 Sauria, tweuty-tive; iSerpentes, thirty-one. Three species of Testudi- 

 nata are peculiar to this district, namely, Cinosternum henrici Lecepede; 

 G. iiavesceiis Agassiz, and Xcrobatcs agasshii Cooper. This district 

 possesses a larger number of i)eculiar species than auy other in the 

 Medicolumbian Kegion. 



The Basin district has but few peculiar species. Its southern bound- 

 ary may be regarded as the San Francisco Mountains in northern Ari- 

 zona. The Grotalus tigris, which is restricted to it, has been shown by 

 Dr. Merriara to inhabit only the mountains, and its northern limit is 

 as yet unknown. The following are the species of the Great Basin : 



BATRACHIA. 



Amhlystoma tigrinum Green. 

 Spea inter montana Cope.* 

 Rana draytonii mica Cope.* 

 Bana pipiens brachycephala Cope. 



SAURIA. 



Grotapliytns collaris Say.t 

 Grotaphytus wisHzenii Baird and Girard.t 

 Uta stansburiana Baird and (iirard.f 

 Sceloporus biseriatus Hallowell. f 

 Sceloporns graciosus Baird and Girard.t 

 Scelojwrus consobrinus Baird and Girard.t 

 Phrynosoma douglassii ornatissiminn Girard.* 

 Anota plafyrhina Girard.t 

 Zanienis taniatus Hallowell. t 

 PityopMs sayi beUona Baird and Girard.t 

 Gliionactis episcopa isizonns Cojie.* 

 Eutcenia elegans ragraiis Baird and Girard. 

 Grotalus tigris Baird and Girard.* 

 Grotalus confinentiis lecontci Hallowell.* 

 The species and subspecies peculiar to the Basin district are marked 

 with a star, and those found also in the Chihuahuan with a dagger. 



