UROCOPTIS OF JAMAICA. 123 



marck's Conchology, p. 28, pi. 15, f. 3 (1827). Cyl. column,! 

 var. intermedia C. B. AD., Contrib. no. 2, p. 22. ?C. bulbi- 

 formis SOWB., Conch. Icon., xx, pi. 11, f. 103 (1875). 



An abundant and well known species, readily recognized 

 by the short shell, very strongly tapering apical cone, narrow 

 truncation, and the much-expanded, trumpet-like peristome, 

 which is thin and sharp-edged. The slender internal column 

 is perceptibly twisted. The original description is given 

 above, and the original figures copied, pi. 33, figs. 10. 11, 12. 



The truncate portion consists of 5 or 6 attenuated whorls 

 forming a nipple-like apex. The first two ivhorls are verti- 

 cally ribbed, the riblets delicate and widely spaced; the follow- 

 ing whorls are more closely and obliquely rib-striate (pi. 32, 

 fig. 86, specimen from Cambridge, St. James). 



Specimens from Rock Fort, near Kingston, are typical. 

 Figs. 96, 97 ; pi. 32, fig. 76 (x 20), further illustrate this form, 

 which varies in size from IS 1 /^ to IS 1 /^ mm. long ; whorls com- 

 monly 7% to 8%. Color dull light brown, varying to dull 

 roseate, dull purple or white. 



At Long Mountain, near Kingston (pi. 33, figs. 1, 2, 3), the 

 size varies more : 



Length 20, diain. 6.5 mm. ; whorls 



Length 17, diam. 5.2 mm. ; whorls 



Length 11.5, diam. 4.7 mm. ; whorls 6%. 



At Cambridge Hill, St. Thomas, the shells vary less in size, 

 and are glossy, with smooth, flat strife. 



Specimens from Round Hill, near Milk River, St. Cathe- 

 rine (pi. 33, fig. 99, pi. 32, fig. 84), are similar to those from 

 Long Mt., but are more coarsely striate and less variable in 

 size. An albino specimen is figured. 



Cylindrella bulbiformis Sowerby (pi. 33, fig. 4) seems to be 

 a specimen of U. b rev is which has retained the apex to matu- 

 rity. The original description follows: "Shell shortly fusi- 

 form, pink, very finely striated, ventricose; apical whorls 

 contracted, middle convex, inflated, last narrow, notched, 

 hardly unwound; aperture large, rather round; margin 

 round." The habitat is unknown, and it may possibly prove 

 to be a Haitian Bracliypodclla. 



