UROCOPTIS OP JAMAICA. 127 



The information given by Deshayes is repeated above, and 

 his figures are copied, pi. 33, figs. 87-89. These indicate a 

 thin shell with weak basal keel, and it is doubtful whether 

 this exact form has been identified, and even whether it may 

 not prove to belong to the brevis chain of variations. 



Yar. SANCTAEANNAE nov. PL 58, figs. 65, 66 ; pi. 32, fig. 81. 



American and Jamaican collectors have identified as C. 

 ovata a species (pi. 58, figs. 65, 66) found along the northern 

 coast in northern St. Ann and northeastern Trelawny, map 

 no. 2, area 16. It varies from flesh-pink to light brown-pink, 

 is somewhat barrel-shaped, decidedly swollen, thick and 

 strong. The last whorl is shortly free, but more so than U. 

 brevis, and it has a rather strong basal keel. 6% to 7% 

 whorls remain, the apex being generally more broadly trun- 

 cate than in U. brevis. The rounded aperture is wider than 

 long, with a continuous, free, broadly expanded and well re- 

 flexed peristome, which is noticeably thickened, and rolled 

 backwards at the edge, instead of being acute like that of U. 

 brevis. The axis is rather stout, but not in the least twisted, 

 thus differing from that of U. brevis. Specimens of average 

 dimensions measure 17% mm. long, 7% wide, with 7 whorls; 

 and length 19, diam. 7 mm., with 8 whorls. There is but 

 little variation in size among the large series seen, from the 

 Henderson and Jarvis collections. It extends eastward to 

 Ocho Rios and Braco, St. Ann. The young stage is still 

 unknown. 



This form was recorded as C. ovata Desh? and probably as 

 C. brevis Pfr., Ocho Rios, by Henderson, Nautilus, viii, p. 

 19, nos. 83, 86. 



8. U. HENDERSONI n. sp. PL 35, figs. 55-58 ; pi. 32, fig. 83. 



Shell cylindric or oval-cylindric, very solid, flesh-colored 

 or rarely yellowish, sculptured with comparatively coarse 

 rounded riblets narrower than their intervals. Spire mode- 

 rately or but slightly tapering, broadly truncate. Whorls 7 

 to 7y 2 , rather convex, the last shortly free in front, having a 

 low but rather wide basal keel. Aperture transversely oval, 



