15, LiosAvRUs.—16, DIPLOLEMUS. 125 
Habit stout, Phrynocephalus-like. Head rather large, slightly 
longer than broad; snout short, rounded, with very short and 
obtuse canthus rostralis ; nostril considerably nearer the end of the 
snout than the orbit; ear-opening vertically oval, a little smaller 
than the eye-opening. Upper head-scales small, convex, smooth, 
largest on the forehead and between the orbits, where they form 
four longitudinal series in the middle; occipital scarcely enlarged ; 
supraocular scales very small, with a group of slightly enlarged 
ones; a series of infraorbitals, that immediately under the eye the 
largest; labials small, rostral and mental much larger. Dorsal 
scales very small, equal, granular, flat, smooth; ventrals larger, 
though also very small, roundish-subquadrangular, subimbricate, 
smooth. Limbs short; the adpressed hind limb reaches hardly the 
ear; digits slightly depressed, with long falciform claws. Tail 
tapering gradually, nearly as long as head and body, covered with 
small, juxtaposed, flat, smooth scales. Pale greyish above, orna- 
mented with symmetrical blackish, white-edged spots; a black band 
on the middle of the snout, bifurcating between the orbits, the 
branches terminating on the occiput; a black band on each side of 
the head, passing through the eye and above the ear, and extending 
to above the axilla; another black band from the angle of the 
mouth; a series of posteriorly-directed tricuspid black spots on the 
middle of the back; three or four series of oval spots along the 
flanks; tail with blackish annuli; lower surfaces whitish, with 
interrupted longitudinal blackish lines. 
Total length .......... 133 millim 
Head: s65 eiwasndy eases 19 3 
Width of head ........ Le 55 
Body. saig'ce eyeviews es 46, 
Fore limb ............ 2B igs 
Hind limb ............ 42 ,, 
Pall gop cnetaane ohare acess 3 68 
South America. 
a. 2 S. America. T. Bell, Esq. [P.]. 
16. DIPLOLEZMUS. 
Diplolemus, Bell, Zool. Beagle, Rept. p. 19; Gray, Cat, Liz. p. 224, 
Tympanum distinct. Body depressed, covered with small smooth 
scales; no dorsal crest. Upper head-scales small. A transverse 
gular fold; no gular pouch. Digits cylindrical, with smooth lamelle 
inferiorly. No femoral pores. Tail rather short, round. Lateral 
teeth with obtuse or subspherical crowns; no teeth on the palate. 
No sternal fontanelle. Abdominal ribs. 
Patagonia. 
