1 8 . CNEMID OPHOR US 495 



102. Cnemidophorus perplexus BAIRD & GIRARD 

 SEVEN-LINED WHIP-TAIL LIZARD 



Cnemidophorus perplexus BAIRD & GIRARD, Proc. Acad. Nat. Sci. Phila., 

 Vol. VI, 1852, p. 128 (type locality, Valley of the Rio San 

 Pedro of the Rio Grande del Norte); COPE, Bull. U. S. Nat. 

 Mus., No. i, 1875, P- 46; YARROW, Bull. U. S. Nat. Mus., No. 24, 

 1883, p. 44; STRECKER, Baylor Univ. Bull., Vol. XII, No. I, 1909, 

 p. 14; STRECKER, Baylor Bull., Vol. XVIII, No. 4, 1915, p. 24; 

 STEJNEGER & BARBOUR, Check List N. Amer. Amph. Kept., 1917, 

 p. 67. 



Cnemidophorus tessellatus perplexus COPE, Trans. Amer. Philos. Soc., 

 Vol. XVII, 1892, p. 34; COPE, Report U. S. Nat. Mus. for 1898, 

 1900, p. 573, fig. 105 (part). 



Cnemidophorus arizonce VAN DENBURGH, Proc. Cal. Acad. Sci., Ser. 2, 

 Vol. 6, 1896, p. 344, pi. XLIX (type locality, Fairbank, Cochise 

 County, Arizona); VAN DENBURGH & SLEVIN, Proc. Cal. Acad. 

 Sci., Ser. 4, Vol. 3, 1913, p. 408; STEJNEGER & BARBOUR, Check 

 List N. Amer. Amph. Kept., 1917, p. 65. 



Description. Snout long with nearly vertical sides. 

 Nostrils opening in large anterior nasal plates, latter in con- 

 tact with each other and with the first or sometimes the 

 second supralabials. Posterior nasal forming sutures with 

 anterior nasal, second labial, loreal, prefrontal, and fronto- 

 nasal and sometimes first labial plates. Lc -eal in contact 

 with third and fourth labials, preocular, first superciliary, 

 prefrontal and posterior nasal plates. Four supraoculars, first 

 and fourth smaller than others. Second, third and fourth 

 supraoculars separated from superciliaries by small convex 

 granules. Similar granules intrude between fourth supra- 

 ocular and parietal. Occipitals represented by two or three 

 series of small plates behind parietals and interparietal. 

 About five superior and six inferior labials to a point below 

 middle of eye. Sublabials large, anteriorly in contact with 

 infralabials, posteriorly separated by granules or plates. An- 

 terior gulars largest centrally, becoming gradually a little 



