112 IGUANID.E. 
laterally ; in the young the digital fringe is almost as much deve- 
loped as in Basiliscus. Tail strongly compressed, crested like the 
back ; its length about twice that of head and body ; caudal scales 
subequal, keeled, the lower larger. Brownish above, uniform or 
spotted with darker; frequently a light festooned band from axilla 
to groin; lower surfaces brownish white. 
Total length .......... 450 millim. 
Head: iy ac eke eee ess 304, 
Width of head ........ 24, 
Body? a acxcin 3 aie gigse ines 110_—C—*, 
Fore limb ...........: 63 sy, 
Hind limb............ 110 ,, 
Maa: esse atowaeate ae alee 310, 
Guianas ; Brazil. 
a-b. 3d. Demerara Falls. 
c« Q. Vryheids Lust, Demerara. Rev. W. T. Turner [C.]. 
d. 3. Surinam. Mr. E. Bartlett (C.]. 
ef. &. Swinam. 
g,h. d and yg. Brazil. 
2, Ad, stuffed. 2 
11. ENYALIOIDES. 
Tympanum distinct. Body compressed; a dorsal crest; dorsal 
scales small. A transverse gular fold; a more or less developed 
gular sac in the male. Digits compressed, with sharply-keeled 
lamell inferiorly. Males with a few femoral pores*. Tail long, 
compressed. Lateral teeth tricuspid; pterygoid teeth. No sternal 
fontanelle. Abdominal ribs. 
Veragua to Peru. 
Synopsis of the Species. 
J. Caudal scales subequal, not forming regular segments; dorsal 
scales equal. 
Ventralscales smooth or indistinctly keeled ; 
tail feebly compressed, not crested .. 1. laticeps, p. 113. 
II. Tail with rings of larger scales; dorsal scales unequal. 
A. Dorsal and nuchal crests continuous; supraciliary edge 
simple. 
Ventral scales smooth or very feebly 
keeled; scales on the sides scarcely 
intermixed with larger ones ........ 2. prestabilis, p. 113. 
Ventral scales keeled ; two longitudinal 
series of larger scales on each side of 
the ibaickis. eri ies wots haa’ yeh Lies 3. heterolepis, p. 114. 
Ventral scales sharply keeled: a single 
series of larger scales on each side; 
* Except in £. palpebralis. 
