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. comuta that no 

 detailed remarks are necessarv. 



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,'SL. 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. Zoological 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. comuta 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. 



