Vol. IV] VAN DENBURGH AND SLEVIN— ISLAND REPTILES ^45 



8. Cnemidophorus labialis Stejneger, 

 We have no specimens of this species. 



9. Siagonodon humilis (Baird & Girard). 



No. 8860 is a dried specimen of this worm snake which 

 was found dead on the sand in a dry wash, July 18, 1905. 



10. Crotalus exsul Garman. 



We have received no rattlesnakes from Cerros Island. 



NATIVIDAD ISLAND. 



We have two kinds of lizards secured by Mr. Slevin during 

 a visit of a few hours, July 19, 1905. 



1. Uta stansburiana Baird & Girard. 



The collection includes 46 specimens (Nos. 8887 to 8932) 

 of this Uta. The femoral pores in 40 specimens vary from 

 12 to 17; being 12 once, 13 six times, 14 sixteen times, 15 

 thirty-one times, 16 twenty times, and 17 six times. 



2. Cnemidophorus multiscutatus Cope. 



Twenty-three whiptails (Nos. 8864 to 8886) taken seem not 

 to differ from those secured on Cerros Island. They were 

 abundant about the deserted nesting burrows of sea birds. 

 Femoral pores vary from 16 to 21; being 16 four times, 17 

 eight times, 18 nine times, 19 fifteen times, 20 six times, and 21 

 four times. magdalena island. 



We have no additional material from this island. The 

 following species have been recorded. 



1. Dipsosaurus dorsalis Baird & Girard. 



2. Crotaphytus wislizenii Baird & Girard. 



3. Uta nigricauda Cope. 



4. Sceloporus zosteromus Cope. 



5. Verticaria hyperthra beldingi (Stejneger). 



6. Cnemidophorus rubidus (Cope). 



SANTA MARGARITA ISLAND. 



We have nothing new to record regarding the reptiles of 

 Santa Margarita. Five kinds have been reported. 



1. Callisaurus ventralis (Hallowell). 



2. Sceloporus zosteromus Cope. 



3. Cnemidophorus rubidus Cope. 



4. Bascanion laterale fuliginosum (Cope). 



5. Crotalus mitchellii Cope. 



