8. L&MANCTUS. 105 
larger than the eye-opening. Gular scales small, suboval, feebly 
keeled, enlarged and hexagonal near the labials. Dorsal ridge more 
or less strongly serrated; scales on the body unicarinate, smallest 
on the sides, largest on the abdomen, 57 to 61 round the middle of 
the body. The adpressed hind limb reaches beyond the tip of the 
snout ; digits very long, very unequal. Tail round, more than three 
times as long as head and body, covered with keeled scales. Reddish 
or purplish above (in spirit), with dark-brown bands across the 
body, most distinct on the vertebral region ; a dark brown band 
from the eye to the tympanum, sometimes continued along the side 
of the back ; a whitish streak from below the eye to the fore limb, 
and from axilla to groin; a white spot on each side of the base of 
the tail, close to the thigh ; lower surfaces pale purplish or greenish ; 
tail with indistinct dark annuli. 
Total length ws gasasce waa as 610 millim. 
Head (to extremity of helmet). 47  ,, 
Width of head .............. 2B. “ex, 
Body (from occiput).......... 105, 
Fore Jam b? 45 caysey vals aoe ars 80, 
Hind lmby ses egesaeee saws 140 so, 
Weil. ctata take owe Cenee HAs 460 __,, 
Southern Mexico; Yucatan. 
a-c. 3 Q. Mexico. 
d. Yg. Vera Cruz. 
e. Ad., stuffed. Mexico. 
2. Lemanctus alticoronatus. 
Lemanctus alticoronatus, Cope, Proc, Ac. Philad. 1865, p. 192, and 
Proc, Am. Phil. Soc, 1869, pl. ii. 
Very closely allied to the preceding, differing in the larger scales 
(45 to 51 round the middle of the body), the more elongate gulars, 
and the less distinct vertebral serration. Pale purplish, with anas- 
tomosing dark lines; no white streak along the flanks, but a white 
spot in front and another behind the thigh. 
Yucatan. 
a Q. Yucatan. 
3. Lemanctus longipes. 
Lemanctus longipes, Gray, Cat. p. 185. 
Lemanctus longipes, Wiegm. Herp. Mev. p. 46, pl. iv.; Dum. § 
Bibr. iv. p. 172; Bouleng. 1. c. p. 464, pl. vii. fig. 2. 
The scales on the forehead much larger than those on the back of 
the head, but smaller and less regular than in ZL. serratus ; posterior 
border of head angular, without projecting triangular scales. Gular 
scales mostly bi- or tricarinate. No dorsal crest. Otherwise as in 
