Vol. IV] VAN DEN BURGH AND SLEVIN— ISLAND REPTILES ^35 



SANTA ROSA ISLAND. 



During our visit in April, 1911, we secured three species. 

 The Hyla had not previously been taken on this island. 



1. Batrachoseps pacificus Cope. 



We failed to find this salamander on Santa Rosa Island, al- 

 though it is known to occur there. 



2. Hyla regilla Baird & Girard. 



Seventeen specimens (Nos. 36103 to 36119) collected April 

 12, 1913, add this tree-toad to the known fauna of Santa Rosa 

 Island. They seem to differ in no way from mainland speci- 

 mens. 



3. Sceloporus biseriatus becki Van Denburgh. 



The 17 specimens (Nos. 36086 to 36102) secured by us 

 show the coloration characteristic of 5. becki. All these speci- 

 mens have the frontoparietal separated from the enlarged 

 supraoculars. Femoral pores vary from 14 to 19; being 14 

 once, 15 eight times, 16 nine times, 17 nine times, 18 five 

 times, and 19 once. 



4. Gerrhonotus scincicauda Skilton, 



We found one specimen (No. 36085) on Santa Rosa Island, 

 April 12, 1913. The dorsals are in 14 rows. The temporals 

 and limb scales are smooth. The ventral dark lines run along 

 the middles of the rows of scales. 



SANTA CRUZ ISLAND. 



In the few hours we were able to devote to collecting on 

 this island we secured two species which had not been taken 

 there before. Six species are now known from this island. 



1. Batrachoseps pacificus Cope. 



Five specimens (Nos. 36149-36153), were taken April 13, 

 1913, under old bark and from rotten logs in the vicinity of 

 Pelican Bay. Each has 18 costal folds and shows the colora- 

 tion typical of this species. 



2. Hyla regilla Baird & Girard. 



We collected 12 specimens (Nos. 36137 to 36148) near 

 Pelican Bay, April 13, 1913. They were found, several to- 

 gether, in cavities in decaying logs, where they probably had 

 retreated for protection from the dry weather of summer. 



