424 TEIIDE. 
long; preefrontals and frontoparietals small ; interparietal narrow, 
hexagonal; three supraoculars; a loreal; a row of small infra- 
orbitals ; temporal shields irregular ; two pairs of large chin-shields, 
in contact, followed by a double row of transversely enlarged gulars. 
Nuchal scales large, transverse, in two rows, smooth. Bronze- 
brown above, with two whitish longitudinal bands; lower surfaces 
white. 
millim. millim. 
Total length (tail in- From end of snout 
jured).......... 112 to vent ........ 47 
Head, to ear-opening 9 Fore limb........ 10 
From end of snout Hind limb........ 16 
to forelimb .... 14 
Morro de Garza, Brazil. 
32. IPHISA. 
Iphisa, Gray, Proc. Zool. Soc. 1851, p. 89; Peters. Mon. Berl. Ae. 
1862, p. 188. 
Tongue rather elongate, arrow-headed. Lateral teeth tricuspid. 
Head with large regular shields ; frontonasal separating the nasals; 
prefrontals and frontoparietals present ; nostril pierced in the lower 
part of a single nasal. Eyelids developed, lower with a transparent 
disk. Ear exposed. Limbs well developed; inner finger short, 
clawless. All the scales roundish-hexagonal, imbricate, smooth, 
arranged quincuncially, two rows along the back and two along the 
belly much dilated transversely ; caudal scales lanceolate, keeled. 
No collar fold. Tail cylindrical. Males with, females without, 
femoral pores. 
Brazil, Guianas. 
1, Iphisa elegans. 
Iphisa elegans, Gray, J. c. pl. vi. fig. 3, 
Head depressed, snout short, broad, truncate; body elongate ; 
limbs short. Frontonasal much broader than long, sometimes 
longitudinally bisected ; preefrontals forming a short suture; frontal 
hexagonal, narrower than the frontonasal ; frontoparietals a little 
larger than the prefrontals, forming a short suture; parietals large ; 
interparietal pentagonal, with straight lateral edges, as long as, but 
much narrower than, the parietals; occipitals not distinguishable 
from the nuchal shields; supraoculars three, anterior smallest, 
second largest; two superposed loreals; a row of infraorbitals ; 
temples shielded ; seven upper and six or seven lower labials; chin- 
shields, one anterior and two pairs, the first pair enormous, forming 
a very long suture, the second pair very small. Dorsal and nuchal 
scales forming a double alternating series of twenty-nine or thirty 
pairs; these enlarged scales rounded-hexagonal, three times as 
broad as long behind the occiput, becoming gradually narrower ; 
