49, scrLoporus. 233 
between the end of the snout and the posterior border of the ear. 
Fourteen to eighteen (twenty-two) femoral pores. Caudal scales 
much larger than dorsals. Male with enlarged postanal scales. 
Brownish, olive, or green above, the sides marbled with black ; 
dorsal region immaculate, or irregularly spotted with black and 
whitish, more often with a double series of angularly curved black 
markings pointing forwards; head frequently with transverse black 
lines ; usually a large black spot in front of the shoulder, sometimes 
connected with its fellow across the throat ; lower surfaces yellowish 
or greenish, throat sometimes marbled with grey: male with the 
throat and the sides of the belly blue, broadly edged with black near 
the narrow whitish median ventral line. 
millim. nillim. 
Total length ...... 155 Fore limb ........ 30 
Hea Osa sos ei sera 15 Hind limb........ 44 
Width of head .... 13 Dall Tie AG eee 88 
BOO Yi wits scape sitelacinas 52 
Mexico. 
a-g. SQ. Ciudad. Hr. A. Forrer fat 
A. Her. Ventanas. Hr. A. Forrer [C.]. 
i-k, 1. Q & her. Puebla. 
mp. dQ. Orizaba. 
g-t. 3 & her. Jalapa. Mr. Hoege [C.]. 
u-v. 3. Mexico. M. Sallé [C.]. 
wim. 32. Mexico, 
17. Sceloporus zneus. 
Tropidolepis eeneus, Gray, Cat. p. 210. 
Sceloporus zneus, Wieym. Isis, 1828, p. 370, and Herp. Mex. p. 50; 
Bocourt, Miss. Sc, Mex., Rept. p. 205, pl. xviii. bis, fig. 4; Cope, 
Proc. Am. Philos. Soc, xxii. 1885, p. 394. 
Tropidolepis zneus, Dum. § Bibr. iv. p. 309. 
Head-shields keeled or striated; an irregular series of feebly 
dilated transverse supraoculars ; one or two canthal scales ; occipital 
as long as broad ; parietals very small; anterior border of ear very 
slightly denticulated. Dorsal scales larger than ventrals, strongly 
keeled, sharply pointed, forming parallel longitudinal series ; forty 
to forty-four scales between the occipital and the base of the tail ; 
six to ten scales correspond to the length of the shielded part of the 
head ; lateral scales nearly as large as the dorsals, more or less dis- 
tinctly keeled, forming straight longitudinal or slightly oblique 
series; ventrals smooth, mostly bicuspid; forty to forty-six scales 
round the middle of the body. The adpressed hind limb reaches 
hardly the axilla in the female, the shoulder or a little beyond in the 
male; tibia not quite as long as the shielded part of the head; the 
distance between the base of the fifth toe and the extremity of the 
fourth equals or slightly exceeds the distance between the end of 
the snout and the ear. Fourteen to nineteen femoral pores on each 
side, the two series meeting medially. Caudal scales as large as, or 
