﻿13. PHRYNOSOMA 407 



Phila., 1885, p. 146; Ditmars, Reptile Book, 1907, p. 150, pis. 

 XLVI, figs. 11, 15, XLIX, fig. 1; Stone, Proc. Acad. Nat. Sci. 

 Phila., 191 1, p. 229. 

 Phrynosoma so/are Van Denburgh, Proc. Cal. Acad. Sci., Ser. 2, Vol. 5, 



1895, p. 115; Van Denburgh, Proc. Cal. Acad. Sci., Ser. 2, Vol. 6, 



1896, p. 342; Cope, Report U. S. Nat. Mus. for 1898, 1900, p. 420, 

 fig. 73; Ruthven, Bull. Amer. Mus. Nat. Hist., Vol. XXIII, 1907, 

 p. 544; Bryant, Univ. Cal. Pubis. Zool., Vol. 9, No. 1, 191 1, p. 5; 

 Van Denburgh & Slevin, Proc. Cal. Acad. Sci., Ser. 4, Vol. 3, 

 l 9 J 3> PP- 39 2 > 4°6; Stejneger & Barbour, Check List N. Amer. 

 Amph. Rept., 1917, p. 60; Van Denburgh & Slevin, Proc. Cal. 

 Acad. Sci., Ser. 4, Vol. XI, 1921, p. 51; Nelson, Mem. Nat. Acad. 

 Sci., Vol. XVI, 1921, pp. 1 14, 126. 



Description. — Nostrils opening above lines joining sup- 

 erciliary ridges with end of snout. Head-spines large; 

 three or four temporals, two occipitals and one postorbital 

 on each side, and rarely one small interoccipital. Some- 

 times with small spines above between temporals and eye, 

 also in front of occipital spines. Temporal scales with 

 ridges running in the general direction of temporal spines. 

 Other upper head scales flat or slightly convex and rough- 

 ened with numerous granulations. One longitudinal series 

 of gular scales enlarged and sometimes spinose, but becom- 

 ing smaller anteriorly, and continued on gular fold or folds. 

 A continuous series of eight to 1 sublabials becoming longer 

 and more spinose posteriorly, the last smaller. Two groups 

 of spines on each side of neck, lower usually smaller. Back 

 and tail with large, scattered, somewhat elevated, keeled, 

 tubercular scales, between which are smaller scales and gran- 

 ules. Two rows of peripheral spines, the lower series not 

 well developed and composed of small spines. Tail edged 

 with one or two rows of lateral spines, and bearing a small 

 group of slender spines just behind thigh. Scales on the 

 anterior surfaces of limbs large, pointed and strongly keeled, 

 those on chest, sides of abdomen, lower surfaces of limbs 



