BARBOUR AND NOBLE: THE GENUS CYCLURA. 163 
Description:— The diagnosis given above is sufficient to characterize 
the species quite adequately. It is so similar to C. cornuta that no 
detailed remarks are necessary. 
Material examined. 
The diagnosis was taken from M. C. Z. 4717, Navassa Island, 
received from the Smithsonian Institution. Cope states (Proc. Amer. 
philos. soc., 1886, 23, p. 264) that his description of nigerrima was 
taken from a specimen partially skeletonized. He then proceeds 
to diagnose C. onchiopsis, a synonymous form, also from Navassa 
Island and based upon three specimens in the U. S. N. M. We 
strongly suspect that our specimen is one of the types of onchiopsis. 
It was received in Cambridge before the appearance of Cope’s paper, 
but it is known that Cope often drew up notes and descriptions of 
species and frequently subjected them to long delays before they 
actually appeared in print. Our specimen agrees remarkably with 
Cope’s description and Dr. Stejneger writes me that he has not found 
the specimens which Cope refers to in the National Museum. 
There is also a fine mounted adult male in the M. C. Z. said to 
come from Navassa Island and representing this species. It was 
presented by the N. Y. Zodlogical Society. 
CYCLURA STEJNEGERI, nov. sp. 
Plate 12. 
Type, a young specimen U. S. National Museum 29367; Mona 
Island, August, 1901, B. S, Bowditch. Paratype M. C. Z. 11145, 
formerly U.S. N. M. 29365, an adult male having the same data. 
Diagnosis:— Very similar to C. cornuta from which it may be dis- 
tinguished by the following characters :— 
Nasals in contact with the rostral; two, and in part three rows of 
scales between the nasals. Prefrontals separated from the enlarged 
median frontal scale by two rows of scales. A single large, elongate 
canthal scale preceded by three small precanthals. Dorsal crest much 
reduced between the shoulders, absolutely interrupted on the rump, 
fifty-one scales in the crest from shoulder to rump. Limiting row 
of each verticil not much wider than the other rows of the verticils. 
Color somewhat faded, uniform dark olive-green. 
Habitat:— Mona Island. 
