Zoological Society. 65 
economy of this Saurian, which I now submit to the Zoological 
Society. 
The following memoir from the pen of my friend was communi- 
cated to me in the beginning of the year 1846; the animal, though 
spoken of by the name Jguana, is the identical specimen above de- 
scribed, and which Mr. Hill had noticed to differ from J. tubercu- 
lata by its lacking the dentelations on the gular pouch. 
“* Our Iguana is considered to be entirely herbivorous. It is found 
only in particular parts of the island. The low limestone chain of 
hills, along the shore from Kingston Harbour and Goat Island, on 
to its continuation in Vere, is its ordinary haunt ; and it is not un- 
frequently taken in the plains between those sea-coast hills and the 
more inland mountains, being found in hollow trees in the pastures, 
where they congregate, several of them together. 
** The labourers in clearing and burning off some of the savannas 
between Spanish-town and Passage-fort the other day (March 1844), 
surprised in a hollow bastard-cedar tree (Guazuma ulmifolia) some 
five Iguanas of the largest size. The one I sketched measured forty- 
five inches long, and it was said not to have been the largest. It 
was extremely fat and muscular. A russet-green, here and there 
graduating into slaty-blue, is the general colour of the body and 
limbs ; some oblique lines of dark olive-green are traceable on the 
shoulders, and three broad dark triangular patches descend from the 
dentelations of the back down to the belly, with zigzag spots of 
dark olive-brown dispersed about. At very regular intervals, the 
tail is alternately of a lighter and darker olive-green. A _ bluish- 
green colour, more decided than on the body, prevails in the dente- 
lations of the back, and on the legs... ... 
** Succulent herbs, growing in the forests of the limestone hills I 
have referred to, supply food for theIguana. These hills, however, 
are so little suited for this sort of vegetation, that hardly anything 
more than aromatic and resinous trees and balsamic plants grow 
there. The lignum-vite (Guaiacum), the Acacia nilotica, and cactuid 
plants,—particularly the torch and melon thistles (Cactus repandus et 
peruvianus, et Cactus melocactus),—the lantana, and the varronia, 
with many balmy mallows (Sida altheifolia, urens, capillaris, et vis- 
cosa), and the vervain (Stachytarpheta), seem to comprise almost the 
whole catalogue of trees, shrubs and herbs. These hills are, how- 
ever, inhabited by several domestic animals, which have run wild. 
Goats and hogs, derived from the common domestic breeds, have 
become feral; and even the common domestic poultry, cocks and 
hens, have taken to the woods as jungle-fowl, with the pintado. 
Quails and doves find here a safe breeding-place. These hills are 
also the special resort of the musteline thrush, the wood-thrush of 
the North Americans, which more than divides with the mocking- 
bird the credit of a songster. It has a louder and more brilliant 
note, though its song be greatly less varied and melodious. The 
fruit of the torch-thistle seems the great attraction of the wood- 
thrush, but it is not easy to perceive the resource of the granivorous 
birds. The aromatic herbs suit the wild goats; but the hogs can 
Ann. & Mag. N. Hist, Ser. 2. Vol. iv. 
