1922] Schmidt, Amphibians and Reptiles of Lower California 617 



*Uta stansburiana hesperis Diadophis amabilis 



Uta microscutata Lam propeltis getidus hoijlii 



*Phrynosoma blainvillii blainvillii *Lampropeltis California* calif or nix 

 *Phrynosoma nelsoni Rhinocheilus lecontei 



*Gerrhonotus sdndcauda irebbii Hypsiglena ochrorhynchus ochrorhynchus 



*Anniella pulchra Thamnophis ordinoides vagrans 



*Cnemidophorus tesscllatus stejnegeri ^Thamnophis ordinoides hammondii 

 *Vcrlicaria hyperythra beldingi Crotalus oreganus 



Verticaria hyperythra schmidti *Crotalus exsul 



Plestiodon skiltonianus *Crotalus goldmani 



Of the amphibians, only Hijla regilla and Batrachoseps attenuatus 

 range to the south of this area; Hyla arenicolor reappears in the moun- 

 tains of Arizona, but is absent in the Colorado Desert proper, as is the 

 wide ranging Scaphiopus hammondii. Batrachoseps leucopus is confined 

 to the Coronados Islands. The remaining four species are all typical 

 members of the Pacific fauna which reach their southern limits in the 

 San Diegan district. 



The reptile fauna is much more heterogeneous. A number of species 

 have a wide range to the north or south of the San Diegan district proper, 

 such as Sceloporus occidentalis bi-seriatus, Uta microscutata, Verticaria 

 hyperythra schmidti, Plestiodon skiltonianus, Coluber lateralis, Diadophis 

 amabilis, Lampropeltis getulus boylii, Rhinocheilus lecontei, Hypsiglena 

 ochrorhynchus ochrorhynchus, Thamnophis ordinoides vagrans, and Crotalus 

 oreganus. Of these, Uta microscutata and Verticaria hyperythra schmidti 

 do not range to the north of the area, and Scelopor'us occidentalis bi- 

 seriatus, Thamnophis ordinoides vagrans, and Crotalus oreganus do not 

 range south of it. A number of species range south to Cedros Island: 

 Sceloporus rufidorsum, Uta stansburiana hesperis (to San Bartolome Bay), 

 Verticaria hyperythra beldingi, and Crotalus exsul. A few forms cross 

 over from the Colorado Desert: Crotaphytus wislizenii, Callisaurus 

 ventralis gabbii, Coluber flagellum piceus, Salvadora hexalepis, Pituophis 

 catenifer rutilus, and Arizona elegans. 



The seventeen species of reptiles starred in the list above may be 

 considered characteristic of the San Diegan fauna. Phrynosoma nelsoni, 

 however, known only from San Quintin, may prove to be more properly 

 a Vizcaino Desert form. This includes the four species which range south 

 to Cedros Island; and Uta stansburiana hesperis, Gerrhonotus scincicauda 

 webbii, Anniella pulchra and Lichanura roseofusca range slightly outside 

 the limits of the San Diegan district to the north. Xantusia henshawi 

 may be named as a characteristic San Diegan form not yet recorded from 



*Species confined, or nearly so, to the area discussed. 



