REPTILES OF THE PACIFIC COAST. 15 



This area shares with the southern coast or San Diegan 

 Fauna alone only Hypsiglena ochrorhynchus, Salvadora 

 grahamue, and probably A7Hzona elegans, and with the 

 valleys or Californian Fauna possibly Bascanion tcenia- 

 tum, while in common with both these areas it has Uia 

 stansbtiriana, Rhinochellus lecontei, Bascanion jiagellum 

 frenatum, Thamnophis hammondii, and perhaps Scelop- 

 orus biseriaius. Moreover, it lacks twenty -seven (or 

 thirty-three) species and subspecies which occur in one 

 or both of these adjoining Faunae, and possesses none 

 of those found in the Sierra Nevada and northern coast 

 areas. The Desert Fauna is the most distinct of the 

 minor life areas of California. 



The San Diegan Fauna. — This area comprises the 

 western portions or coastal slopes of San Diego, River- 

 side, Orange, San Bernardino, and Los Angeles Coun- 

 ties, excepting the higher lands, which belong rather 

 with the Sierra Nevada. It is, in the main, a warmer 

 and dryer area than the Californian Fauna, to which it 

 is most closely allied. 



The reptiles of this Fauna are twenty-eight (or thirty) 

 in number, of which the following eight (or nine) are 

 peculiar to it: 



Uta mearnsi, Cnemidophorus stejuegeri, 



Sceloporus orcutti, Verticaria hyperj'thra beldingi, 



Phrynosoma blaiuvillii, Lichanura roseofusca, t 



Xantiisia henshawi, Crotalus ruber. 

 Xantusia riversiana, * 



It shares with only the Desert Fauna Hypsiglena och- 

 rorhynchus, Salvadora grahamice, and probably Arizona, 

 elegans; with the Californian Fauna, Anniella pulchra, 

 Lampropeltis California^, Bascanion laterale, and perhaps 



♦Insular. 



t Occurs also near Tucson, Ariz. 



