Base of fifth to end of 

 fourth toe . 16 20 20i^ 22 24 24 



Distribution. — This species doubtless is confined to 

 Santa Catalina Island, Gulf of California, Mexico. 



Remarks. — The two paratypes of Miss Dickerson's C. 

 disparilis apparently belong to this species. See remarks 

 under that species. 



118. Cnemidophorus bacatus Van Denburgh & Slevin 

 San Pedro Nolasco Island Whiptail 



Cnemidophorus bacatus Van Denburgh & Slevin, Proc. Cal. Acad, 

 Sci., Ser. 4, Vol. XI, No. 6, 1921, p. 97 (type locality, San Pedro 

 Nolasco Island, Gulf of California, Mexico). 



Description. — Body long, with a very slender tail and 

 very long legs. Nostrils opening in large anterior nasal 

 plates, latter in contact on top of snout. Posterior nasal 

 forming sutures with anterior nasal, first, second, and third 

 labials, loreal, prefrontal, and frontonasal plates. Loreal 

 in contact with third and fourth labials, first subocular, pre- 

 ocular, first superciliary, prefrontal, posterior nasal, and 

 usually first supraocular plates. Four supraoculars, fourth 

 smallest. Second, third, and fourth supraoculars separated 

 from superciliaries by small convex granules. Similar gran- 

 ules between third and fourth supraoculars and frontopar- 

 ietal and parietal. One to three transverse series of small 

 occipitals behind parietals and interparietal. About five 



