BARBOUR AND NOBLE: THE GENUS CYCLURA. 149 
separate p. 5) quotes Maynard to the effect that “The Iguana occurs 
commonly in the cliffs of both this island and Little Cayman.” He 
was discussing the island of Cayman Brac. During the autumn of 
1915 this island was visited by the most terrific hurricane of historic 
times. The whole terrestrial fauna of the island is said to have suffered 
very seriously. 
Material examined. 
We have only seen a single specimen of this species, the type. 
CYCLURA BAEOLOPHA Cope. 
Plate 4, 5, 6; Plate 13, fig. 1, 2. 
Cope, Proc. Acad. nat. sci. Phil., 1887, p. 123. Barbour, Mem. 
M. C. Z., 1914, 44, p. 298. 
Diagnosis:— Nasals broadly in contact with the rostral. Pre- 
frontal region covered by a pair of rectangular supranasals broadly 
in contact in the middle line of the snout; each supranasal in contact 
with a pair of narrow prefrontals which are followed by a very large 
posterior prefrontal; the anterior and posterior prefrontals form a 
median suture continuous with the nasal and supranasal suture,— 
all of these scutes covering the upper surface of the snout strongly 
convex, even tubercular. Frontal region between the prefrontals 
and the supraorbital semicircles covered by several rows of large 
irregular scales; the row in contact with the prefrontals consisting 
of very large scales, the largest being about a third as large as the 
posterior prefrontal; between the semicircles on a line with their 
anterior end a single large flat scale. Supraorbital semicircles formed 
of large tubercular scales clearly differentiated from the slightly 
swollen scale of the supraorbital and frontal regions; semicircles 
separated by two partly by four rows of scales. Occipital region 
covered with scales slightly larger than the frontoparietals, the outer 
rows much larger than the others; two rows of scales between the 
occipital and the semicircles. Canthus rostralis consisting of a single 
large canthal scale and a short squarish precanthal, both swollen and 
slightly keeled; the canthal scale in contact with two elongate supra- 
ciliaries. Dorsal crest formed of low blunt spines, the largest about 
half a centimeter high; this crest broadly interrupted on the shoulders 
