332 PROCEEDINGS OF THE ACADEMY OF [1896. 



C sarcostomuvi clearly belongs to the immediate group of C. creta- 

 ceum and C. cohtmna. The latter has a very dark aperture, broadly 

 flanged lip and less obtuse apex. G. cretaceum lacks sculpture except 

 on the basal whorl, is absolutely cylindrical, with light mouth and 

 excessively short terminal cone, while the present species is more 

 tapering, with the cone decidedly longer, gradually passing into the 

 cylindrical portion. 



This species is, we believe, the first one to be reported from Little 

 Inagua. It is extremely likely that C cretaceum, described without 

 locality, will prove to inhabit some part of the Inagua group, when 

 it is re-discovered. 



Cerion Abacoense Pilsbry & Vanatta. PI. XI, fig. 11. 



Shell cylindrical, solid and strong, entirely white. Latter three 

 whorls of about equal diameter, preceding one slightly smaller, those 

 earlier rapidly tapering to form a short cone ; apex obtuse. Sculpt- 

 ured with rather close, strong and nearly straight riblets, as wide as, 

 or narrower than the interstices, numerous (81-38 on last whorl), 

 part of the riblets generally splitting on the base ; 1 5 to If nepionic 

 whorls free from riblets, and those of the following several whorls 

 very fine, though distinct. Whorls 9| to IH, slightly convex, the 

 last ascending as usual. Sutures well-marked. Umbilicus a nearly 

 straight rimation terminating in an almost closed axial chink ; um- 

 bilical area (back of columellar lip) small, with a bounding furrow 

 below. 



Aperture vertical, brought forward almost to anterior level of the 

 cylinder ; rounded, nearly as wide as high, obliquely truncate above. 

 Peristome well reflexed, recurved, its face thickened and convex ; 

 parietal callus heavy, but thinned at outer edge. Axial fold moder- 

 ate, parietal fold deep seated, low, and rather long. 



Alt. 34, diam. 13 ; alt. of aperture 12 mm. (largest specimen). 



Alt. 27i, diam. 13 ; alt. of aperture llf mm. (shortest specimen). 



Abaco, Bahamas. 



This beautiful species differs from C. album Maynard and C 

 Maynardi Pils. & Van. in the characters of the umbilical region and 

 lip, as stated in our former paper on Cerion.' 



Cerion Abacoense Bendalli Pilsbry & Vanatta. PI. XI, fig. 13. 



A m\n'\a.tnxe Abacoense (q. v.) in shape and sculpture. Whorls 10 

 to lOj. White, closely mottled with brown, the nepionic whorls 



^Proc. Acad. Nat. Sci., Phila., 1895, p. 209. 



