Jyne'9 GARMAN — CLIPPERTON ISLAND LIZARD 61 
99 5 
traversed or the great length of time taken in making the voyage, 
it evidently was from that direction that the little reptile under 
consideration was derived. 
Lygosoma arundelii sp. n. 
Habit similar to that of Z. cvanurum Less. but more slender; tail longer 
than the body. Length from snout to fore leg two and three-sevenths times 
in the distance from snout to vent. Head long, pointed, depressed on the 
snout, preorbital regions nearly vertical. Snout moderately slender and 
narrow, blunt at the end, longer than the distance from the eye to the ear. 
Rostral shield low, in contact with seven shields. Upper labials seven; fifth 
below the eye, longer than high; sixth and seventh as long as high. Lower 
labials six, elongate, narrow; anterior on each side triangular. Mental short, 
broadly in contact with a wide submental. Space behind the anterior sub- 
mental between the lower labials occupied by a pair of large shields in contact 
on the median line; and behind these a second pair in contact with the labials 
but separated on the median line by a single scale, and behind the second 
pair again a third separated in the middle by three or four small scales. Each 
submental is in contact with two of the labials. Nostril between two small 
nasals; an elongate narrow supranasal. Postnasal and loreal irregular sub- 
pentagonal, longer than high. Lower eyelid scaly, with a large transparent 
disk. Frontonasal broader than long, in contact with the rostral and more 
narrowly with the frontal. Prefrontals separated by the frontal and the fronto- 
nasal. Width of frontal two thirds of its length, broadest at the anterior one 
third, narrow posteriorly, in contact with two supraorbitals on each side. 
Seven to nine supraciliaries. A series of four shields from the fifth labial to 
the anterior supraorbital, third smallest, upper three in contact with the loreal. 
Frontoparietals and interparietal fused into a broad subquadrate or kite- 
shaped shield, with concave sides, an acute hinder angle and a slight truncation 
against the frontal. Parietals large, widely in contact on the median line. 
A pair of large nuchals and a large temporal behind each parietal. Marginal 
preanal shields somewhat larger. Scales lustrous, in 28 rows around the 
body, those of the back little if any larger than those of the belly and feebly 
quinquecarinate, those of the flanks about half as large. Sixty scales from 
chin to vent. Ear opening twice as large as the palpebral disk, with several 
small rounded lobules on the anterior border. Feet pentadactyl; hind limb 
and foot hardly reaching the axilla; digits moderately elongate, slender, 
flattened below, except under distal joint which is compressed and rounded 
beneath; subdigital lamella smooth, about thirty-five, five or six of which are 
narrow, under the fourth toe. 
General appearance blackish. Color dark olivaceous brown, edges of scales 
darker, each scale more or less mottled or irregularly spotted with dark brown 
