﻿428 3. 1GUANIDM 



86. Phrynosoma m'callii (Hallowell) 



Flat-tailed Horned Toad 



Plate 37 



Anota m'callii Hallowell, Proc. Acad. Nat. Sci. Phila., Vol. VI, 1852 



p. 182 (type locality, "Great Desert of the Colorado, between 



Vallicita and Camp Yuma, about 160 miles east of San Diego") ; 



Hallowell, Sitgreaves' Exped. Zufii and Colorado Rivers, 1853, 



p. 127, pi. 10; Bocourt, Miss. Sci. Mex., Rept., 4e livr. 1874, p. 



230. 

 Doliosaurus mc'calli Girard, U. S. Explor. Exped., Herpetology, 1858, 



p. 408; Baird, U. S. Mex. Bound. Surv., Vol. II, Rept., 1859, p. 



9, pi. 28, figs. 4-6; Cooper, Proc. Cal. Acad. Sci., Vol. IV, 1870, 



p. 67. 

 Phrynosoma maccallii Cope, Proc. Acad. Nat. Sci. Phila., 1866, p. 310; 



Cope, Bull. U. S. Nat. Mus., No. 1, 1875 p. 49; Coues, Surv. 



W. 100th Merid., Vol. V, 1875, p. 593; Gentry, Proc. Acad. Nat. 



Sci. Phila., 18S5, pi. 148. 

 Anota maccallii Cope, Report U. S. Nat. Mus. for 1898, 1900, p. 448, 



fig. 82; Bryant, Univ. Cal. Pubis. Zool., Vol. 9, No. I, 1911, pp. 



5. 54, P>- 7- 



Phrynosoma m'callii Stejneger, N. Amer. Fauna, No. 7, 1893, p. 19c; 

 Van Denburgh, Occas. Papers Cal. Acad. Sci., V, 1897, p. 100; 

 Van Denburgh, Proc. Cal. Acad. Sci., Ser. 4, Vol. 3, 1912, p. 153; 

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

 I 9 I 3> PP- 393> 4°6; Grinnell & Camp, Univ. Cal. Pubis. Zool., 

 Vol. 17, No. io, 1917, p. 166; Stejneger & Barbour, Check List 

 N. Amer. Amph. Rept., 1917, p. 59; Van Denburgh & Slevin, 

 Proc. Cal. Acad. Sci., Ser. 4, Vol. XI, 1921, p. 51. 



Anota m'calli Stephens, Trans. San Diego Soc. Nat. Hist., Vol. Ill, 

 No. 4, 1921, p. 62. 



Description. — Snout very short with nostrils opening 

 above continuations of superciliary ridges. Large head- 

 spines: one slender occipital, three to five temporals, and 

 five to seven sublabials, on each side. Sometimes a small 

 interoccipital horn. Scales on upper surface of head slightly 

 convex and nearly smooth, two on occiput being largest. 

 Supralabials small, but projecting, making margin of upper 



