190 IGUANIDE. 
tubercles ; ventral scales small, larger than dorsals, smooth or indi- 
stinctly keeled. Limbs strong, digits long and slender. Twelve to 
eighteen femoral pores on each side. Tail strongly compressed, 
crested above, covered with uniform keeled scales which are larger 
inferiorly. Green or greenish, lighter beneath ; upper surfaces uni- 
form, or speckled or variegated with darker and lighter; usually 
dark, light-edged, undulated vertical bars down the flanks, tail with 
more or less distinct dark annuli; usually a whitish band in front 
of the arm. 
centim. centim, 
Total length ...... 139 Fore limb ........ 18 
Heads. i4 oaaaee aes 75 Hind limb........ 28 
Width of head .... 5 ARAL Poids oils acon a 100 
Body wie ses dee oe 31°5 
South America to Nicaragua; West Indies. 
a,b. Ad., stuffed.  W. Indies. 
ec. Ad., skeleton. W. Indies. 
d. ¢. Island of St. Thomas. 
e. Her, 2. Dominica. 
fe XS. Tobago. A. Ludlam, Esq. [P.]. 
g. Her. Trinidad. 
h. Y¥g. W. coast of America. Mr. Bridges [C.]. 
ao. Nicaragua. 
k. Yg. Panama. Capt. T. C. Dow [P.]. 
i. Ad., stuffed. Ecuador. Mr. Fraser [C.]. 
m S. W. Ecuador. Mr. Fraser [C.]. 
n. Her. Sarayacu, Peru. W. Davis, Esq. [C.]. 
o,p. Yg. Venezuela. 
g. Her. British Guiana. 
r 3. Vryheids Lust, Demerara, Rev. W. T. Turner [C.]. 
s-t. Yg. Surinam, Mr. Bartlett [C. }. 
U,V, W, X. Surinam. 
y, 2% Yg. Brazil. 
a. Ad., stuffed. Pernambuco. J.P.G. Smith, Esq. [P.]. 
B. Yg. Pernambuco, J.P.G. Smith, Esq. Pd 
y. g. Recife, Pernambuco. W. A. Forbes, Esq. [P.]. 
o-n. 2, her., & yg. Bahia. 
,u 3 & yg. Upper Amazons. 
x. Ad., stuffed. —? Capt. Kellet and Lieut. 
Wood [P.]. 
r, pw. Ad., stuffed. ——P 
v,£,0,7,p,5,3 Q. 
Var. rhinolopha. 
Iguana rhinolophus, Gray, Cat. p. 186. 
Iguana rhinolopha, Wiegm. Herp. Mex. p. 44; Dum. & Bibr. iv. 
p. 207; Sumechrast, Arch. Se. Phys. Nat. xix. 1864, p. 50; Cope, 
et Am. Phil. Soc. 1869, p. 161; Bocourt, Miss. Sc. Mev., Rept. 
p. 184. 
se, ak cornutus (non Daud.), Tyler, Proc. Zool, Soc. 1850, p.106, 
pl. iii. 
