100 IGUANIDZE. 
unicarinate, very feebly so on the back and sides, distinctly on the 
belly ; the scales largest on the flanks, smallest on the middle of the 
back. Limbs short; the adpressed hind limb reaches the elbow in 
the male, not so far in the female. Nine femoral pores on each 
side. Tail twice or twice and a half as long as head and body, covered 
with strongly keeled scales. Pale olive above, uniform or with 
irregular angular black cross bands on the body ; black lines radiating 
from the eye, the two most marked extending to the fore limb, the 
lower passing through the tympanum. 
ae &. 
Total length .... 293 322 millim. 
Head .......0... 22 1s ar 
Width of head .. 11 4.~«C«, 
BOG! cise scree 66 92 4 
Fore limb ...... 31 39, 
Hind limb...... 40 50g, 
Pail: x cpiseresens 205 205 ,, 
Brazil; Paraguay. 
a-b,e,d. dQ. Brazil. 
3. Polychrus gutturosus. 
aoe gutturosus, Berthold, Abh. Ges. Giotting. iii. 1847, p. 5, 
pl. i. fig. 1. 
— (Chaunolemus) multicarinatus, Peters, Mon. Berl. Ac. 1869, 
p. 786; Bocourt, Miss, Se. Mez., Rept. p. 112, pl. xvii. fig. 8. 
Snout obtusely pointed; nostril equally distant from the orbit and 
the tip of the snout ; eye-opening a little larger than the tympanum ; 
upper head-scales as in the preceding. Gular scales oval, striated, 
much larger than ventrals, those on the gular pouch widely separated 
by granules; no denticulation. Scales on the body of nearly equal 
size, the dorsals and laterals unicarinate, the ventrals tri- or quin- 
quecarinate. Limbs moderately elongate, the scales mostly quinque- 
carinate. Six to eighteen femoral pores on each side. Tail long, 
round, covered with unicarinate scales. Olive-brown above, greenish 
yellow inferiorly ; an irregular yellow band along the back of the 
thighs; tail with indistinct darker cross bands. 
Total length .......... 153 willim. 
Heads ise's axadet noes: 35, 
Width of head ........ DE oss 
Fore limb ............ 63, 
Hind limb............ HOS is 
Pally Li ptire a heateshes, eacsdk A 338, 
Colombia ; Costa Rica. 
