﻿12. SCELOPORUS 281 



Sceloporus consobrinus Yarrow & Henshaw, Ann. Report Chief of 



Engineers for 1878, Surv. W. 100th Merid., Appendix NN, 1878, 



p. 224 (part); Yarrow, Bull. U. S. Nat. Mus., No. 24, 1883, p. 61 



(part). 

 Sceloporus consobrinus gratiosus Yarrow, Bull. U. S. Mus., No. 24, 1883, 



p. 62 (part); Townsend, Proc. U. S. Nat. Mus., Vol. 10, 1887, p. 



238. 

 Sceloporus undulatus consobrinus Cope, Report U. S. Nat. Mus. for 1898, 



1900, p. 377 (part). 

 Sceloporus graciosus graciosus Grinnell & Camp, Univ. Cal. Pubis. 



Zool., Vol. 17, No. 10, 1917, p. 157; Stejneger & Barbour, Check 



List N. Amer. Amph. Rept., 1917, p. 54 (part). 



Description. — Head and body somewhat depressed. 

 Nostrils opening much nearer to end of snout than to orbits. 

 Upper head-shields smooth, moderately large, and slightly 

 convex; interparietal largest. Frontal usually divided trans- 

 versely. Parietal, frontoparietal, and frontal plates sep- 

 arated from enlarged supraoculars by a series of small plates 

 or granules. Superciliaries long, wide, and strongly imbri- 

 cate. Middle subocular very long, narrow, and strongly 

 keeled. Rostral plate very wide and rather high. Labials 

 long, low, and almost rectangular. Below lower labials, 

 some series of sublabial plates. Symphyseal large and pent- 

 angular. Gulars small, smooth, imbricate, frequently 

 emarginate posteriorly, about size of ventrals. Ear-open- 

 ing large, slightly oblique, with an anterior denticulation of 

 from four to seven acuminate scales. Dorsal scales equal- 

 sized, keeled, pointed, about equal in size to ventrals, and 

 arranged in nearly parallel longitudinal rows. Scales on 

 sides similar to those of the back, but directed obliquely up- 

 ward. No longitudinal dermal folds, and no transverse 

 fold on throat. Superior surfaces of limbs provided with 

 keeled scales. Posterior surface of thigh covered with small, 

 smooth scales. Ventrals smooth, but usually biscuspid. Cau- 

 dal scales very much larger than dorsals, keeled and strongly 



