99 
The following papers were read :— 
1. On rue Hasits or CycLuRA LOPHOMA, AN Iquanirorm LIzARD. 
By P. H. Gosss. 
(Reptilia, Pl. 1.) 
The subject of the present paper seems to be as yet unknown to 
science; it may be thus described :— 
CycLura LopHoma, mihi—(Aogos, a crest, and wyos, the shoulder). 
Shields on the muzzle separated by small scales; muzzle with four 
many-sided, convex, unkeeled plates on each side, the anterior and 
posterior very large, the intervening two smaller, short, but wide. 
General head-shields irregular in size, a largish one near the middle 
of the head; lower jaw with one (posteriorly two) series of large, 
thomboidal, keeled plates, with none between them and the labial 
plates. Dorsal crest high, continuous over the shoulders, inter- 
rupted over the loins. 
Length about 3 feet, of which the tail measures 21 inches. Colour 
(in a dried state) greenish-grey, with obscure blackish spots, con- 
fluent, so as to form a rude reticulation. 
This very distinct species may be at once recognised by the num- 
ber, form and arrangement of the plates of the muzzle, and particu- 
larly by the serrated crest not being interrupted over the shoulders. 
I have never met with it alive in Jamaica; the specimen from which 
the above description is taken, now in the British Museum, was one 
of many zoological treasures presented to me by my kind and valued 
friend, Richard Hill, Esq., of Spanish-town. It is to the same gen- 
tleman that I am indebted for the whole information, concerning the 
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 Iguana, 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 
