SIO 8. TEIIDM 



List N. Amer. Amph. Rept., 1917, p. 67; Van Denburgh & Slevin, 



Proc. Cal. Acad. Sci., Ser. 4, Vol. XI, 1921, pp. 28, 35, 40, 43, 51. 

 Cnemidophorus tessellatus gracilis Cope, Bull. U. S. Nat. Mus., No. I, 



1875, p. 46 (?); Yarrow, Bull. U. S. Nat. Mus., No. 24, 1883, 



p. 45. 

 Cnemidophorus tessellatus tigris Cope, Bull. U. S. Nat. Mus., No. i, 



1875, p. 46; Yarrow & Henshaw, Ann. Rep. Chief of Engineers 



for 1878, Surv. W. icx)th Merid., Appendix NN, 1878, p. 219; 



Yarrow, Bull. U. S. Nat. Mus., No. 24, 1883, p. 45 (part). 

 Cnemidophorus tigris tigris Camp, Univ. Cal. Publ. Zool., Vol. 12, No. 



17, 1916, p. 529; Grinnell & Camp, Univ. Cal. Publ. Zool., Vol. 



17, No. 10, 1917, p. 172; CowLES, Journ. Entomol. & Zool., Pomona 



College, Vol. XII, No. 3, 1920, p. 65. 



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 supercil- 

 iary, prefrontal, posterior nasal, and sometimes first supra- 

 ocular, plates. Four supraoculars, first and fourth smaller 

 than others. Second, third and fourth supraoculars separated 

 from superciliaries by small convex granules. Similar gran- 

 ules 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 inferior 

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

 except first, 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. Central gular 

 and collar scales a little smaller than in C. t. stejnegeri. 

 Scales on center of collar of moderate size, those on its edge 

 smaller. Small, smooth, convex granules on back usually 



