124 IGUANIDZ. 
Brazil. 
a,b. SQ. Brazil. 
ond, 3g. Rio Grande do Sul. Dr. v. Ihering [C.]. 
2. Urostrophus torquatus. 
Leiosaurus torquatus, Philippi, Arch. f. Nat. 1861, p. 295. 
Head larger and more convex than in the preceding species ; 
tympanum much larger than the eye-opening; occipital slightly 
enlarged, not measuring half the vertical diameter of the tympanum. 
Body slightly compressed ; dorsal scales minutely granular ; ventrals 
much larger, flat, hexagonal, subimbricate. Limbs long, the ad- 
pressed hind limb reaching nearly the posterior border of the orbit. 
Tail not curly, measuring about once and a half the length of 
head and body, covered with rings of small smooth scales. Greyish 
olive, lighter inferiorly ; gular fold black. 
Total length .......... 235 millim. 
HOBO is fees tise andigsen wrelale 25, 
Width of head ........ 19, 
BOY: ..a:zser sisi uth adatan eas 65a, 
Fore limb ............ 42 ,, 
Hind limb ............ 66g, 
Pall. api aeawe eens 145, 
Chili. 
acd. Chili, 
15. LIOSAURUS *. 
Leiosaurus, part., Dum. § Bibr. iv. p.241; Fitzing. Syst. Rept. p. 58 ; 
Gray, Cat. Liz. p. 224; Bocourt, Miss. Sc. Mex., Rept. p. 152. 
Tympanum distinct. Body depressed, covered with small smooth 
scales, granular on the back; no dorsal crest. Upper head-scales 
small. A transverse gular fold; no gular pouch. Digits slightly 
depressed, with smooth lamelle inferiorly. No femoral pores, Tail 
moderately long, round. Lateral teeth tricuspid ; pterygoid tecth. 
No sternal fontanelle. Abdominal ribs. 
South America, 
1. Liosaurus bellii. 
Leiosaurus bellii, Gray, Cat. p. 224. 
Leiosaurus bellii, Dum. § Bibr. p. 242, pl. xxxi. fig. 1; A. Dum. 
a Mus. viii. pl. xxii. tig. 2; Bocourt, 1. c. p. 152, pl. xvii. bis. 
g. 3. 
* ? Leiosaurus scapulatus, Burmeister, Reise La Plata, ii. p. 522,—Sierra de 
Uspallata, 5000 ft. 
