12. SCELOPORUS 3S9 



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 Laboj-at., Vol.1, 1884, p. 7; 

 Stejneger, N. Amer. Fauna, No. 7, 1893, PP- 178-180, pi. i, figs, 

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

 Van Denburch, 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. Sen, Vol. VII, No. i, 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., 191 1, 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. i, 1875, p. 

 40 (part); Yarrow, Surv. W. looth Merid., Vol. V, 1875, P- 575i 

 pi. XXIII, figs. I, la (part). 



Sceloporus clarki clarki Coues, Surv. W. looth Merid., Vol. V, 1875, 

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

 Mus., No. 24, 1883, pp. II, 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, 

 191 5, 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 



