286 



REPORT OF NATIONAL MUSEUM, 1898. 



III. Tail cyliudric, shorter tlian head and body. Scales as in II. 



Hind foot two-lifths len<^th of body; black spots present or absent on tail; two 



small ones on each side ; a few larger supraorbitals Jl. maculata. 



Hind foot one-half length of body ; no lateral or caudal spots ; numerous larger 



supraorbital scales R. elegansj 



Of these species the S. maculata is much the most variable, as many 

 as four subspecies having been pointed out. It has also the widest range, 

 extending throughout tlie Central and Sonoran districts and the Texan 

 subdistrict. II. texana inhabits the Sonoran district and the Texan 

 subdistrict, while the H. proxnnqua inhabits a restricted southwestern 

 region of Texas. 



HOLBROOKIA TEXANA Troschel. 



Holhroolda iexana Baiud and Girard, Proc. Acad. Nat. Sci. Phila., VI, August, 



1852, p. 125 (San Pedro, Texas) ; U. S. Mex. Bound. Surv., Rept., 1859, p. 8, pi. 



XXX. — BocouKT, Miss. Sc. Max., Rept., 1874, p. 163. — Cope, Bull. U. S. Nat. 



Mus., XVII, 1880, p. 14. 

 Copliosauriis iexanus Troschel, Wiegman's Archiv., f. Naturges., 1850 (published 



1852),p. 389,pl. VI. 

 Holhroolda affinis Baird and Girard, I'roc. Acad. Nat. Sci. Phila., VI, August, 



1852, p. 125 (San Pedro).— Baird, U. S. Mex. Bound. Surv., 1859, p. 8.— 



BocoURT, Miss. Sci. Mex., Rept., 1874, p. 163. — Boulenger, Cat. Liz. Brit. 



Mus., II, 1885, p. 207. 



Fi-. no. 



IIOLBROOKIA TEXANA TROSCIIEL. 



El Paso, Texas. 



Cat. No. 2666, U.S.N. M. 



Hind feet lengthened, nearly half the head and body. Femoral pores 

 sixteen or seventeen. Color above, olive gray. The back with ten series 

 of dorsal rounded blotches, which on the tail become rings ; black below, 

 although frequently only obsoletely indicated. Posterior half of sides 



'Bocourt; Mazatlau. 



