396 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



Type. — California Academy of Sciences No. 50508; collected 

 by Joseph R. Slevin, on San Pedro Nolasco Island, Gulf of 

 California, Mexico, April 17, 1921. 



Sceloporus monserratensis, new species 



Diagnosis. — Closely related to 5. rufidorsum, S. zosteromus, 

 and S. lineatulus. Middorsal and dorsolateral light lines usually 

 present. Dorsal scales in a row between interparietal plate and 

 base of thighs 26 to 30. Femoral pores 18 to 22; average in 

 twenty-four specimens 19.7. Adult males with parallel dark 

 lines on lateral scales. Back usually conspicuously spotted with 

 pale blue. 



Type. — California Academy of Sciences No. 50509; collected 

 by Joseph R. Slevin on Monserrate Island, Gulf of California, 

 Mexico, May 24, 1921. 



Cnemidophorus catalinensis, new species 



Diagnosis. — Anterior nasal not in contact with second supra- 

 labial. A few rows of moderately enlarged granules on posterior 

 surface of forearm. No longitudinal markings. Color above 

 grayish brown, paler on head and tail, with granular surfaces of 

 limbs, body and neck, except central nuchal region, finely reticu- 

 lated with darker brown and with very numerous small discrete 

 whitish spots two to five granules in diameter. Lower lateral 

 regions of body and neck and most of the lower surfaces suffused 

 with black. Femoral pores 15 to 18; average of twenty-four 

 thighs 17. 



Type. — California Academy of Sciences No. 50507; collected 

 by Joseph R. Slevin on Santa Catalina Island, Gulf of California, 

 Mexico, June 12, 1921. 



Verticaria ceralbensis, new species 



Diagnosis. — Two or three dorsal lines. Supraoculars three. 

 Scales of collar normally smaller at its edge. Second supraocular 

 in contact with frontal. No red on sides or back of body. No 

 orange below. Tip of tail not blue. Size much larger than any 

 other Verticaria. Ground color between lateral light stripes 

 with light spots or vertical bars. Hind limbs coarsely reticulated 

 with black and gray. Tail not striped. Throat often slaty or 

 black. 



Type. — California Academy of Sciences No. 50510; collected 

 by Joseph R. Slevin on Ceralbo Island, Gulf of California, 

 Mexico, June 6, 1921. 



