420 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Family AMPHIPERASIDAJ. 
Genus TJLTIMITS Montfort, 1810. 
Shell solid, elongate-elliptical, the narrow aperture running its entire length; aperture edentulous, 
or nearly so; there is a strong, elevated, blunt ridge running across the back of the shell. 
TJltimus gibbosus Linnaeus. 
Bulla gibbosa Linnaeus, Syst. Nat., ed. x, p. 726, 1758. 
Omdum gibbosum Reeve, Conch. Icon., xv, pi. vn, fig. 32, 1865. 
Shell solid, narrower above; spire enrolled with the shell and completely concealed under a 
heavy callus; aperture reaching the entire length of the shell, narrow above, somewhat widened 
below; outer lip thickened, smooth within and without, arched overthe upper end of the shell, where 
it is slightly canaliculate; dorsal ridge high and strong, placed a little above the center of the shell 
and running squarely across it; base somewhat canaliculate, the smooth, thick columella slightly 
truncated below. Color whitish, the sides and ends rich cream or buff color. 
Length, 25; diameter, 14 mm. 
Aguadilla; Mayaguez Harbor, Porto Rico; also West Indian region, Florida Keys, etc. 
Family CYPR£ID4E. 
Genus CYPIUEA Linnaens, 1758. 
Shell ovoid, inflated, enrolled, covered with brilliant enamel; spire concealed by the last whorl, 
or very short and covered with enamel; aperture elongated, narrow, furnished with a short canal at 
each end; lip inflected and, with the columellar border, dentate. 
Cypraea exanthema Linnaeus. 
Cyprxa exanthema Linnaeus, Syst. Nat., ed. xn, p. 1172, 1767. 
Cyprxa exanthema Reeve, Conch. Icon., in, pi. v, fig. 16, 1848. 
Shell rather elongated, subcylindrical; aperture slightly curved, a little wider below; inner and 
outer lips well raised above the spire, and separated above by a rounded canal; below, the outer lip 
and columella project each in a flattened process, with a short, open canal between; teeth moderately 
strong, very dark brown. Color pale chocolate, varying to tawny on the back, with numerous rather 
large, round, whitish spots. The meeting line of the lobes of the mantle is whitish and straight. 
Length, 100; diameter, 50 mm. 
A single specimen in very bad condition, without locality, was obtained by the Fish Hawk 
expedition. 
A variable species, which probably includes the Cyprxa cervus of Linnseus, a larger, more inflated 
shell, with smaller spots. The latter is reported from Porto Rico by Gundlaeh. 
Cyprsea cinerea Gmelin. 
Cyprxa cinerea Gmelin, Syst. Nat., p. 3404, 1792. 
Cyprxa cinerea Reeve, Conch. Icon., in, pi. xxn, fig. 124, 1846. 
Shell somewhat obovate, ventricose, inner and outer lips not greatly elevated above; teeth short, 
moderate; back ashy brown, with two faint lighter bands, and often sprinkled with black dots; sides 
and base purplish flesh-colored; interstices between the teeth purplish. 
Length, 35; diameter, 20 mm. 
Mayaguez Harbor; Aguadilla, Porto Rico; several badly worn shells. 
Cyprsea spurca Linnseus. 
Cyprxa spurca Linneeus, Syst. Nat., eii. x, p. 724, 1758. 
Cyprxa spurca Reeve, Conch. Icon., m, pi. xiv, fig. 68, 1845. 
Shell obovate, more or less inflated; lips not greatly produced above; aperture slightly curved, a 
very little wider below; teeth rather strong, short; sides pitted; back whitish or buff, clouded and 
mottled with fulvous yellow, the pits and sides often spotted with brown. 
Length, 30; diameter, 18 mm. 
Aguadilla, Porto Rico, six worn shells. 
These specimens are probably the variety flaveola Lamarck, but are too much worn to be identified 
with certainty. 
