116 3. IGUANIDM 



Length to anus 80 



Length to tail 182 



Snout to orbit 8 



Snout to ear 22 



Width of head 17 



Fore limb 37 



Hind limb 78 



Base of fifth to end of 



fourth toe 28 31 34 31 32 36 



Distribution. — Angel de la Guardia Island, Gulf of 

 California, Mexico. 



Remarks. — This species differs from C. c. baileyi chiefly 

 in the longer snout, narrower head and single, incomplete 

 black collar. 



18. Crotaphytus wislizenii Baird & Girard 



Leopard Lizard 



Plate 8 



Crotufhytus wislizenii Baird & Girard, Proc. Acad. Nat. Sci. Phila., 

 Vol. VI, 1852, p. 69 (type locality, Santa Fe, New Mexico); 

 Baird & Girard, Stansbury's Exped. Great Salt Lake, 185 3, p. 340, 

 pi. Ill; Hallowell, Sitgreaves' Exped. Zuiii & Colorado Rivers, 

 1853, p. 145; Baird & Girard, Marcy's Explor. Red River, 1854, 

 p. 205; Baird, U. S. Mex. Bound. Surv., Vol. II, 1859, p. 7, pi. 31; 

 Baird, Rept. Pac. R. R. Surv., Vol. X, 1859, p. 17; B.mrd, Rept. 

 Pac. R. R. Surv., Vol. X, Pt. VI, No. 4, 1859, p. 37; Cooper, Rept. 

 Pac. R. R. Surv., Vol. XII, 1860, p. 294; Cooper & Buckley, Nat. 

 Hist. Wash. Terr., 1860, p. 294; Cope, Proc. Acad. Nat. Sci. Phila., 

 1866, p. 303, BocouRT, Miss. Sci. Mex., Rep., 1874, p. 15 5, pi. 

 XVII bis. figs. 4, 4a; Cope, Bull. U. S. Nat. Mus., No. 1, 1875; 

 p. 48; Y.^RRow, Surv. W. 100th Merid., Vol. V, 1875, p. 566; 

 CouES, Surv. W. 100th Merid., Vol. V, 1875, p. 590; Yarrow & 

 Henshaw, Ann. Rep. Chief of Engineers for 1878, Surv. W. 100th 

 Merid., Appendix NN, 1878, p. 221; Cope, Proc. Acad. Nat. Sci. 

 Phila., 1883, pp. -14, 15, 18; Yarrow, Bull. U. S. Nat. Mus., No. 

 24, 1883, pp. 9, 5 3 (part); Boulenger, Cat. Lizards Brit. Mu«., 



