13. PHRYNOSOMA 383 



Vol. 3, 1913, pp. 392, 405; Stejneger & Barbour, Check List N. 



Amer. Amph. Rept., 1917, p. 59 (part). 

 Phrynosoma douglassii hernandesi Cope, Report U. S. Nat. Mus. for 



1898, 1900, p. 413, fig. 70 (part); Stone & Rehn, Proc. Acad. Nat. 



Sci. Phila., 1903, p. 32; Ditmars, Reptile Book, 1907, p. 149, pi. 



XLVII, fig. 3 (part); Strecker, Proc. Biolog. Soc. Washington, 



Vol. XXI, 1908, pp. 165, 166; Bryant, Univ. Cal. Pubis. Zool., 



Vol. 9, No. I, 191 1, p. 5; Strecker, Baylor Bulletin, Vol. XVIII, 



No. 4, 1915, p. 11. 

 Phrynosoma hernandezi ornatissirnttm Stone, Proc. Acad. Nat. Sci. Phila., 



191 1, p. 229. 



Description. — Nostrils opening on lines joining super- 

 ciliary ridges with end of snout. Gular scales small and 

 nearly equal-sized. A series of enlarged sublabial scales 

 not much larger than infralabials, separated posteriorly from 

 latter by several rows of granules. Head-spines very short j 

 three principal temporals, one occipital, and one postorbital 

 on each side. Occipital spines sometimes nearly erect, 

 usually directed backward. Supralabials small but promi- 

 nent. Infralabials slightly larger than supralabials, and 

 continued farther back, becoming gradually spinose. Other 

 head scales small, irregular in size and arrangement, flat- 

 tened or more or less convex, and roughened with ridges 

 and granulations. Two groups of spines or neck, upper 

 being larger. Back, tail, and upper surfaces of limbs with 

 scattered, large, more or less erect, keeled, tubercular scales; 

 between these, skin covered with smaller scales and gran- 

 ules. Body with fringe of one series of peripheral spines. 

 Chest and belly and lower surfaces of hind limbs and tail 

 covered with small smooth scales. Tympanum not scaled. 

 Long series of from 11 to 19 femoral pores, sometimes 

 almost meeting medially. Males sometimes with enlarged 

 postanal plates. 



The back is olivaceous, yellow, brown, gray or reddish 

 with large, undulate, more or less indefinite dark blotches. 



