3886 TED, 
13. LEPOSOMA. 
Leposoma, Spix, Spec. Nov. Lacert. Bras. p. 24; Peters, Mon. Berl. 
Ac. 1880, p. 217. 
Lepidosoma, Wagl. Syst. Amph. p. 157; Tschudi, Arch. f. Nat. 1847, 
p. 44; Peters, Abh. Beri. Ac. 1862, p. 189. 
Lepisoma, part., Gray, Cat. Liz. p. 60, 
Tongue moderately elongate, arrow-headed. Lateral teeth com- 
pressed, bi- or tricuspid. Head with large regular shields; fronto- 
nasal separating the nasals; preefrontals and frontoparietals present ; 
nostril pierced in the middle of a single nasal. Eyelids developed, 
lower with a transparent disk composed of several scales. Ear 
exposed. Limbs well developed, pentadactyle. Scales of the body, 
above and beneath, subequal, lanceolate-subhexagonal, strongly 
keeled, imbricate, arranged in transverse and oblique rows. No 
collar-fold. Tail subcylindrical. 
South America. 
1. Leposoma scincoides. 
Lepisoma scincoides, part., Gray, Cat. p. 60, 
Leposoma scincoides, Sper, . ¢. pl. xxvii. fig. 2. 
Lepidosoma scincoides, Tschudi, l.c. p. 55; Peters, 1. e. p. 190, pl. ii. 
fig. 1. 
Head and body moderate. A broad frontonasal, with concave 
posterior border ; a pair of small preefrontals; a frontal; a pair of 
frontoparietals ; two large parietals and a large interparietal; no 
occipitals ; four supraoculars; all the upper head-shields rough, 
longitudinally striated; no loreal; a very small upper and a larger 
lower frenoorbital; a row of very small infraorbitals; temporal 
scales small, keeled ; six upper and five Jower labials; chin-shields 
very large, one anterior and three pairs, the two first pairs forming 
a suture; gular scales similar to the ventrals, but smaller; no trace 
of a collar. Body covered with uniform scales, which are rather 
narrower on the belly ; twenty-three or twenty-four scales round 
the middle of the body; thirty-four scales from the occiput to the 
base of the tail, and thirty-three from the third pair of chin-shields 
to the vent. Four enlarged preanals. Limbs with imbricate 
keeled scales. Caudal scales like those of the body. Yellowish 
brown above, with three or four rows of small black spots on the 
back ; lower surfaces yellowish. 
millim. millim. 
Total length ...... 99 From end of snout 
Head ............ 9 to vent ........ 37 
Width of head .... 4 Fore limb........ 9°5 
From end of snout Hind limb........ 15 
to forelimb .... 13 APB Sects une ecoateled 62° 
Amazons. 
