Vol. XI] VAN DENBURGH-SLEVIN— AMPHIBIANS AND REPTILES 57 



19. Callisaurus crinitus Cope 



One specimen (No. 47731), presented by Miss Mary C. 

 Dickerson of the American Museum of Natural History, was 

 collected at San Bartholeme Bay, Lower California, March 14, 

 1911. 



20. Callisaurus draconoides Blainville 



This lizard, called by the natives Cachora de arena, is a 

 fairly common species, especially near the sea coast where most 

 of our specimens were collected. Here it was found in the 

 sandy areas back of the beaches. In the interior it frequented 

 the hot sandy bottoms of the canyons and adjacent arroyos. 

 It was collected at the following localities: Todos Santos, 

 Cabo San Lucas, San Jose del Cabo, Miraflores, Agua Caliente, 

 Buena Vista, San Bartolo, San Antonio, Triunfo, San Pedro 

 and La Paz. 



The femoral pores in fifty specimens vary from twelve to 

 twenty ; being 12 once, 13 four times, 14 nine times. 15 twenty- 

 one times, 16 twenty- four times, 17 twenty-two times, 18 

 twelve times, 19 five times, and 20 once. 



21. Callisaurus ventralis ventralis (Hallowell) 

 One specimen (No. 3815) was taken by Dr. Risen at San 

 Xavier, in June, 1899. 



23. Uta thalassina Cope 



This large lizard, the most beautiful species of the Cape 

 Region, was collected at Triunfo, San Bartolo, Agua Caliente. 

 and in the Sierra Laguna Mountains. One was seen at Cabo 

 San Lucas where the type was secured by Xantus. As a rule, 

 these lizards are fairly abundant where found. They frequent 

 the cracks and crevices in and between huge granite boulders 

 piled up in the canyon bottoms and the small adjacent arroyos. 

 They resemble Uta mearnsi in their habits, crawling along the 

 surface of the boulders and keeping always close to a crack or 

 crevice into which they disappear on one's close approach. 

 Being rather shy, they will not permit one to come closer than 

 ten or twenty feet. On several occasions they were seen to 

 jump from boulder to boulder a distance of four feet by actual 



