﻿12. SCELOPORUS 359 



73. Sceloporus clarkii Baird & Girard 



Arizona Scaly Lizard 



Plate 29 



Sceloporus clarkii Baird & Girard, Proc. Acad. Nat. Sci. Phila., Vol. 

 VI, 1852, p. 127 (type locality, Sonora); Baird, U. S. Mex. Bound. 

 Surv., Vol. II, 1859, p. 5 (part); Cope, Proc. Acad. Nat. Sci. Phila., 

 1866, p. 310; Cragin, Bull. Washburn Laborat., Vol. I, 1884, p. 7; 

 Stejneger, N. Amer. Fauna, No. 7, 1893, pp. 178-180, pi. 1, figs. 

 ia-ic; Cope, Amer. Naturalist, Vol. XXX, 1896, p. 1014 (part); 

 Van Denburgh, Proc. Cal. Acad. Sci., Ser. 2, Vol. 6, 1896, p. 340; 

 Herrick, Terry & Herrick, Bull. Sci. Lab. Denison Univ., Vol. 

 XI, 1899, p. 126; Herrick, Terry & Herrick, Bull. Univ. New 

 Mexico, Vol. I, 1899, p. 126; Cope, Report U. S. Nat. Mus. for 

 1898, 1900, p. 358, fig. 54 (part); Stejneger, Proc. U. S. Nat. 

 Mus., Vol. 25, 1902, p. 150; Stone, Proc. Acad. Nat. Sci. Phila., 

 1903, p. 31; Bailey, N. Amer. Fauna, No. 25, 1905, p. 42; Meek, 

 Field Columbian Mus. Nat. Hist., Zool. Ser., Vol. VII, No. 1, 1896, 

 p. II; Ditmars, Reptile Book, 1907, p. 128 (part); Ruthven, Bull. 

 Amer. Mus. Nat. Hist., Vol. XXIII, 1907, p. 537; Stone, Proc. 

 Acad. Nat. Sci. Phila., 1911, p. 227; Van Denburch & Slevin, 

 Proc. Cal. Acad. Sci., Ser. 2, Vol. 3, 1913, pp. 392, 404. 



Sceloporus clarkii clarkii Cope, Bull. U. S. Nat. Mus., No. 1, 1875, p. 

 40 (part); Yarrow, Surv. W. 100th Merid., Vol. V, 1875, p. 575, 

 pi. XXIII, figs. 1, ia (part). 



Sceloporus clarki clarki Coues, Surv. W. 100th Merid., Vol. V, 1875, 

 p. 594, pi. XXIII, figs. 1, ia (part); Yarrow, Bull. U. S. Nat. 

 Mus., No. 24, 1883, pp. 11, 63 (part). 



Sceloporus spinosus clarkii Boulenger, Cat. Lizards Brit. Mus., Vol. 

 II, 1885, p. 227 (part); Boulenger, Proc. Zool. Soc. London, 

 1897, p. 496; Strecker, Baylor Univ. Bulletin, Vol. XII, No. I, 

 1909, p. 13; Strecker, Baylor Univ. Bulletin, Vol. XVIII, No. 4, 

 1915, p. 20. 



Sceloporus spinosus Gunther Biologia Centrali-Americana, Reptiles, 

 1890, p. 63 (part). 



Description. — Head and body depressed. Nostril open- 

 ing nearer to end of snout than to orbit. Upper head- 

 plates smooth and usually a little convex. Frontal divided 

 transversely. Parietal and frontoparietal plates not separated 



