1, TUPINAMBIS, 335 
Teguixin, Gray, Griff. A. K. ix., Syn. p. 29. 
Teius, Gray, Ann. N. H. i. 1838, p. 276, and Cat, Liz. p. 16. 
Salvator, Dum. § Bibr. y. p. 78. 
Tongue long, of nearly equal width throughout, sheathed at the 
base. Lateral teeth longitudinally compressed and tricuspid in the 
young, the crowns obtuse in the adult. Head with large regular 
shields ; anterior nasal in contact with its fellow; nostril pierced 
in the suture between the two nasals. Eyelids developed. Ear 
exposed. Limbs well developed; digits five. Dorsal scales small, 
juxtaposed, equal; ventral plates small, elongate-quadrangular, 
smooth, forming regular series. A double collar-fold. Femoral 
pores, Tail rounded. 
South America. 
Synopsis of the Species. 
Two loreal plates; dorsal scales oval, 
convex; 46 to 59 ventral scales across 
the middle of the belly ............ 1. rufescens, p. 335. 
Two loreal plates ; dorsal scales oval, flat ; 
36 to 40 ventral scales across the mid- 
dle of the belly .............0.05. 2. teguiain, p. 335. 
One loreal plate ; dorsal scales regularly 
hexagonal, flat ; about 30 ventral scales 
across the middle of the belly ...... 3. nigropunctatus, p. 337, 
1. Tupinambis rufescens. 
Tejus rufescens, Giinth. Proc. Zool. Soc, 1871, p. 541, and Trans. Zool. 
Soc. xi. p. 22], pl. xlv. 
Very similar to 7. teguivin, but with all the scales considerably 
smaller, this being most conspicuous on the temporal, dorsal, and 
gular regions; the granules of the back more convex; a double 
series of enlarged scales above the temple. A single anterior un- 
divided chin-shield. Ventral scales in thirty-two to thirty-four 
transverse and forty-six to fifty longitudinal series. Seven or eight 
femoral pores on each side. Posterior part of the tail scarcely com- 
pressed. Reddish yellow, above with blackish-brown transverse 
bands; lower parts with more or less indistinct irregular transverse 
dark spots. 
From snont to vent 40 centim.; tail 60 centim. 
Mendoza. 
a,b. d. Mendoza. Zoological Society. (Types.) 
2. Tupinambis teguixin. 
Teius teguexim, Gray, Cat. p. 16. 
Lacerta teguixin, Linn. S. M. i. p. 368; Shaw, Zool. ili, p. 235, 
pls. lxxiii., lxxiv. ; Duvern. R, A, Rept. pl. xi. fig. 1. 
