208 IGTJANID^. 



One or two black latero-ventral spots, none 



under the tail 4. mnculata, p. 209. 



No black spots on sides ; under surface of 



tail black-spotted 5. lacerata, p. 209. 



1. Holbrookia texana. 



Cophosaurus texanus, Trosch. Arch./. Nat. 1850, p. 389, pi. vi. 

 Holbrookia texana, Baird ^- Gir. Proc. Ac. Philad. 1852, p. 125, and 



U.S. Mex. Bound. Siirv., Bept. p. 8, pi. xxx. ; Bocourt, Miss. Sc. 



Mex., Bept. p. 163 ; Cope, Bull. U.S. Nat. Mus. no. 17, 1880, p. 14. 

 affinis, Bai7-d %■ Gir. II. cc. ; Boc. I. c. 



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. milUm. 



Total length 115 Fore limb 29 



Head 12 Hind limb 48 



Width of head .... 10 Tail 60 



Body 43 



Texas to California ; Northern Mexico. 



a. (S . N. Texas. E. D. Cope, Esq. [E.]. 



2. Holbrookia propinqua. 



Holbrookia propinqua, Baird Sf Gir. Proc. Ac. Philad. 1852, p. 126 ; 

 Bocourt, 3Iiss. Sc. Mex., Bept. p. 162 ; Cope, Bull. U.S. Nat. Mus. 

 no. 17, 1880, p. 15. 



Intermediate between H. texana and B. 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. 



a. J . Presidio, W. Mexico. Hr. A. Forrer [C.]. 



