538 8. TEllD.^ 



1 1 5, Cnemidophorus martyris Stejncger 

 San Pedro Martir Island Whiptail 



Cnemidophorus martyris Stejneger, Proc. U. S. Nat. Mus., 1891, p. 

 407 (type locality, San Pedro Martir Island, Gulf of Calif- 

 ornia); Cope, Trans. Amer. Philos. Soc, Vol. 17, No. I, 1892, 

 p. 36; Van Denburgh, Proc. Cal. Acad. Sci., Ser. 2, Vol. 5, 1895, 

 p. 125; Gadow, Proc. Zool. Soc. London, 1906, p. 373; Van Den- 

 burgh & Slevin, Proc. Cal. Acad. Sci., Ser. 4, Vol. 4, 1914, pp. 

 133, 147; Stejneger & Barbour, Check List N. Amer. Amph. 

 Rept., 1917, p. 66; Nelson, Mem. Nat. Acad. Sci., Vol. XVI, 

 1921, pp. 114, 126. 



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, 

 preocular, first superciliary, prefrontal, posterior nasal, and 

 sometimes first supraocular plates. Four (or five) supra- 

 oculars, fourth smallest. Second, third, and fourth supra- 

 oculars separated from superciliaries by small convex gran- 

 ules. Similar granules between third and fourth supra- 

 oculars and frontoparietal and parietal. Two or three trans- 

 verse series of small ocdpitals behind parietals and inter- 

 parietal. About five superior and six or seven inferior 

 labials to a point below pupil. Sublabials large and, except 

 anteriorly, separated from infralabials by small granules and 

 plates. Anterior gulars largest centrally, becoming gradually 

 smaller laterally and anteriorly, and changing rather abruptly 

 to smaller posterior gulars. Scales on center of collar larger 

 than those on its edge. Back covered with small, smooth 

 convex granules. Ventral plates in eight longitudinal rows. 

 Three or four large plates, surrounded by smaller plates and 

 granules, in front of anus. Posterior surface of forearm 



