376 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Section NENIA H. & A. Adams, 1855. 
Clausilia bicanaliculata Ferussac. Plate 54, fig. 14. 
Clausilia bicanaliculata Ferussac, Tableau, p. 02, No. 523, 1821. 
Turbo tridens auctorum, as of Chemnitz; Clausilia costulata Lamarck, 1822; and Clausilia labiata Sowerby, not Dillwyn. 
Shell with a slight umbilical depression, with about eight scarcely rounded whorls, the apex 
decollated, the last whorl much constricted and drawn out into a neck; sculpture of two kinds: a 
series of longitudinal, curved, rather strong ridges crossing which are oblique fine wrinkles; aperture 
directly in line with the axis of the shell, strongly reflexed, white, with two sharp, curved plications 
on the columella. The general color of the shell is a pale brown. 
Length, 27; diameter, 5; of aperture, 6 mm. 
El Yunque; Cayey, Porto Rico. 
A member of a genus having over 700 species, its metropolis being in southeastern Europe. It is 
well represented in Japan, southeast Asia, and the East Indian Archipelago. Quite a number of species 
are found in western South America, and this single form inhabits the West Indies and is confined to 
Porto Rico. 
Family UROCOPTIDdi. 
Genus PINERIA Poey, 1854. 
Pineria viequensis Pfeiffer. 
Bulimus viequensis Pfeiffer, Mai. Blatt., in, p. 40, 1850; Novit. Conch., in, pi. 93, figs. 39-41 . 
Island of Vieques (Pfeiffer) . 
Genus CERION Bolten, 1798. 
Shell rimate, cylindrical, or pupiform, generally vertically ribbed, solid; whorls scarcely rounded, 
the upper tapering rapidly to a point, the last narrowed at the base, usually ascending; aperture 
rounded, subquadrate, or oval, pointed above; peristome thick, reflexed; columella nearly always 
bearing a dentiform fold, and the parietal wall having a denticle. 
Type, Turbo uva Linn. 
Subgenus Strophiops Dali, 1894. 
Cerion crassilabre Sowerby. 
Pupa crassilabris Sowerby, Conch. Icon., xx, Pupa 14, pi. ii, fig. 14, 1875. 
Porto Rico; Virgin Islands. According to Pilsbry and Vanatta (Proc. Acad. Nat. Sci. Phila. 1896, 
p. 324) this species is found in Porto Rico. It is not given in the list of Crosse or Gundlach. 
Cerion striatellum (Ferussac) Guerin. Plate 53, fig. 4. 
Pupa striatella Ferussac Mss. in Guerin, Icon, du Regne Anim. Moll.,p. 16, pi. 6, fig. 12, 1832: Krister, Conch. Cabinet, Pupa, 
pi. 10, figs. 14, 15. 
Shell rather short, cylindrical, with a rounded blunt summit; whorls about nine, scarcely 
convex, the first one and one-half to two smooth, milk white to corneous, the remainder with very 
numerous fine ridges, which are oblique above and vertical on the lower whorls; surface white or 
white variously blotched with horn color; aperture rather small, rounded or subquadrate, having a 
small, revolving, deep-seated lamellar tooth on the columella, and a short lamellar one on the parietal 
wall, white or brownish within; peristome moderately thickened, reflexed; base rounded and ending 
in an ill defined ridge around the small umbilical perforation. 
Length, 23; diameter, 10; greatest length of aperture, 7 mm. 
Cabo Rojo Light; Ponce, Porto Rico. The specimen from Ponce is longer, more tapering above, 
and more strongly ribbed than the shells from Cabo Rojo, and has ten whorls. The material examined 
agrees very well with the original description of Pupa striatella, and it is quite probable that it is that 
species. The material from Porto Rico collected by the Fish Commission belongs to the subgenus 
Strophiops. It certainly differs much from the description and figure of Pupa crassilabris in the Con- 
chologia Iconica, which has a double lip. We have numerous specimens from Porto Rico, Tortola, 
and Anguilla in the National Museum collection, none of which have a double lip. 
Pilsbry and Vanetta place Cerion striatellum in the subgenus Diacerion, and credit it to Cabo Cruz, 
Cuba, only. 
