CROCODILIANS, LIZARDS, AND SNAKES. 1229 



TESTUDINATA. 



Cinosternum pennsilvanicum. 

 Onychotria mexioana Gray. 



SATTRIA. 



Phrynosoma orbiculare Wiegniann. 

 ISceloporus sealaru Wiegmaini. 

 Sceloporns microlepidotus Wiegmaun. 

 Jiarissia imbricata Wiegmaini. 

 Cnemidoplwrus (juttatus Baird and Girard. 

 Ewmeces brevirostris Giiiitlier. 

 Sceloporus torquatus Greeu. 

 Sceloporus minor Cope. 

 Sceloporus melanogaster Cope. 

 Tantilla ealamarina Cope. 

 Crotahis basiliscus Cope. 

 Crotalus polystictus Cope. 



SERPENTES. 



Conopsis nasus Giinther. 



Toluca lineata Kemiicott. 



Chionactis varians Jan. 



Salvadora bairdii Jan. 



Epiglottopliis pleurost ictus Dumeril and Bibron. 



Natrix storerioides Cope. 



Eutwnia macrostcmma Kennicott. 



Eutccnia eques Renss. 



Eutccnia pulchrilatus Cope. 



Eutamia scaliger Jan, 



Eutcvnia melanogaster Wiegmanu. 



Tantilla boeourtii Giintlier. 

 Of these species the following occur in the Chiliuabuan district: 



Amblystoma tigrinum Green. 



Spea hammondii Baird. 



Hyla arcnicolor Co\)e. 



Sceloporus scalaris Wiegniann, 



Sceloporus microlepidotus \V i cgm ami , 



Cnemidopliorus gutfatus Uaird and Girard. 



Epiglottophis pleurostictus Dumeril and Bibron. 



Euticnia macrosiemma Kennicott. 



Eutcfnia eques lleuss. 



The Austroriental district includes the mountainous region which 



bounds the Mexican Plateau on the east, from some part of the State 



of Puebla to a point to the north not yet ascertained. It is probably 



separated by a considerable interval from the Austroriparian in the 



