506 8. TEIIDM 



106. Cnemidophorus maximus Cope 

 Giant Whiptail Lizard 



Cnemidophorus maximus Cope, Proc. Acad. Nat. Sci. Phila., 1863, 

 p. 104 (type locality, Cape St. Lucas, Lower California, Mexico); 

 Cope, Proc. Acad. Nat. Sci. Phila., 1866, p. 312; Cope, Bull. U. S. 

 Nat. Mus., No. I, 1875, pp. 45, 93; Lockincton, Amer. Naturalist, 

 Vol. 14, No. 4, 1880, p. 295; Yarrow, Bull. U. S. Nat. Mus., No. 

 24, 1883, pp. 42, 188; Garman, Bull. Essex Inst., Vol. 16, No. i, 

 1884, p. 13; BouLENGER, Cat. Lizards Brit. Mus., Vol. 11, 1885, 

 p. 369; Cope, Bull. U. S. Nat. Mus., No. 32, 1887, p. 45; Belding, 

 West Amer. Scientist, Vol. Ill, No. 24, p. 97; Cope, Trans. Amer. 

 Philos. Soc, Vol. 17, No. i, 1892, p. 32; Van Denburgh, Proc. 

 Cal. Acad. Sci., Ser. 2, Vol. 5, 1895, P- 122; Cope, Report U. S. 

 Nat. Mus. for 1898, 1900, p. 570, fig. 104; Gadow, Proc. Zool. 

 Soc. London, 1906, p. 371; Stejneger & Barbour, Check List 

 N. Amer. Amph. Rept., 1917, p. 66; Van Denburgh & Slevin, 

 Proc. Cal. Acad. Sci., Ser. 4, Vol. XI, 1921, pp. 51, 62; Nelson, 

 Mem. Nat. Acad. Sci., Vol. XVI, 1921, pp. 114, 115; Terron, 

 Mem. y Rev. Soc. Cient. Antonio Alzate, Vol. 39, 1921, p. 164. 



Description. — Snout long with nearly vertical sides. 

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

 tact on top of snout. Posterior nasal forming sutures with 

 anterior nasal, first, second and third labials, loreal, pre- 

 frontal, and frontonasal plates. Loreal in contact with third 

 and fourth labials, first subocular, preocular, first super- 

 ciliary, prefrontal, posterior nasal, and first supraocular, 

 plates. Four supraoculars, first long and narrow, fourth 

 smaller than others. Second, third and fourth supraoculars 

 separated from superciliaries by small convex granules. Simi- 

 lar granules intrude between third and fourth supraoculars 

 and frontoparietal and parietal. Occipitals represented by 

 from two to four transverse series of small plates behind 

 parietals and interparietal. About five superior and six in- 

 ferior labials to a point below middle of eye. Sublabials large, 

 separated from infralabials by small granules and plates. 



