208 IGUANID.E. 
One or two black latero-ventral spots, none 
under theta. i cece ae ss eean nears es 4. maculata, p. 209. 
No black spots on sides; under surface of 
tail black-spotted .... 20... 00... eee eee 5. lacerata, p. 209. 
1. Holbrookia texana. 
Cophosaurus texanus, Trosch. Arch. f. Nat. 1850, p. 389, pl. vi. 
Helbrookie texana, Baird & Gir. Proc. Ac. Philad. 1852, p. 125, and 
U.S. Mex. Bound. Surv. Rept. p. 8, pl. xxx.; Bocourt, Miss. Se. 
Mex., Rept. p. 163; Cope, Bull. U.S. Nat. Mus, no. 17, 1880, p. 14. 
— aflinis, Baird § Gir. ll. ec.; Boe. le. 
Head small, much depressed ; nostril large, superior ; head-scales 
flat, smooth; occipital broader than long; a large infraorbital ; 
upper labials six or seven, oblique. Dorsal scales minute, hexagonal, 
flat, smooth; ventrals much larger. Edge of the gular fold very 
feebly denticulated. Limbs long; the adpressed hind limb reaches 
the end of the snout; foot as long as the distance between axilla 
and groin, Twelve to fourteen femoral pores on each side. Male 
with enlarged postanal scales. Tail strongly depressed, slightly 
longer than head and body. Pale grey above, with darker grey and 
white markings; lower surfaces white ; throat and a large patch 
on each side of the belly, blue in the male, the latter crossed by 
two crescentic black bands; tail with a series of black transverse 
spots inferiorly ; a dark streak along the hind side of the thighs. 
millim. millim. 
Total length ...... 115 Fore limb ........ 29 
Head te seule wary 12 Hind limb........ 48 
Width of head .... 10 aah: grit a sh-eeecvsce ts 60 
Body eas vee ee dus 43 
Texas to California ; Northern Mexico. 
a. 3. N. Texas. E. D. Cope, Esq. [E.]. 
2. Holbrookia propinqua. 
Holbrookia propinqua, Baird § Gir. Proc. Ac. Philad. 1852, p. 126; 
Bocourt, Miss. Se. Mex., Rept. p. 162; Cope, Bull. U.S. Nat. Mus. 
no. 17, 1880, p. 15. 
Intermediate between H. tewana and H. maculata, Head and 
general scaling as in the latter ; limbs as in the former. Tail sub- 
cylindrical [longer than head and body}. Fifteen or sixteen femoral 
pores on each side. Grey above, sides dotted with white; a series 
of large angular dark spots on each side of the vertebral line; a 
pair of bluish-black spots on each side of the belly; tail immaculate 
inferiorly ; a dark streak along the hind side of the thighs. 
From snout to vent 51 millim., hind limb 46 millim. 
Texas and Mexico. 
ad. Presidio, W. Mexico, Hr. A, Forrer [C.}. 
