GROCODILIANS, LIZARDS, AND SNAKES. 1221 



Phyllorhynchus decurtatus Cope. 



PifyophLs rerichraJis Blainville, 



Ghilomeniseus stramineHs ( 'ope. 



TanUlla planieeps Blainville. 



Crotalus enyo Cope. 

 The district shares with the Chihnahuan the following species: 



Biijo pnnefatus Baird and (Jirard. 



Dip.sosanrus ilorsalis HalloMell. 



Crotaphytus unsUzenii Baird and (iirard. 



(JalHmurns draconolfles Blainville. 



Sauromulus ater Duraoril. 



Uta stanshuriana Baird and Girard. 



Uta ornata Baird and Girard. 

 Sccloporns zosteromus Cope. 

 Phrynosoma coronatum Blainville. 

 Phyllodactylns inherculoKUH Wiegmanii. 

 Salvadora (jrahamiw Baird and Girard. 

 Ophlholus f/etulns boylii Baird and Girard. 

 GhiJomeniscns fasciatus Cope. 

 HypHf/lena ochrorhynchns Cope. 

 Natri.v valida Kennicott. 

 Eutania eques Reuss. 

 Trimorphodon lyrophanes Cope. 

 Crotalvs adamanfeKs atrox Baird and Girard. 

 Croialus mitcJiellii Cope. 

 Species common to the Lower Californian district and the Western 

 snhregion (mostly to the Diegan district) are the following: 

 Ilyla regiUa Baird and Girard. 

 Phrynosoma coronatum Blainville. 

 Vvrticaria liyperythra Cope. 

 GerrhonotuH multicarinatus Blainville. 

 Opiholus f/etulns boylii Baird and Girard. 

 Opiholus (jetulus californiw Blainville. 



Plethodon croceater Cope. • 



Total species of the Lower Californian district: 



Peculiar to it 



Coiiimon to the Chihnahuan district 



Coiiimou to the Westeru subregion 



Total 



39 



Thirty-eight species, one being twice enumerated as common to the 



Chiiuiahuau district and Western region. 



The Ghihuahuan district possesses the following peculiar species: 



SALIENTIA. 



Bufo alvarius Girard, 

 Hyla arenicoJor Cope. 



