406 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Nitidella laevigata Linnaeus. 
Buccinum Ixvigatum Linn., Syst. Nat., ed. x, p. 741, 1758. 
Columbella Ixvigata Tryon, Man., v, p. 113, pi. xlvi, figs. 16-21, 1883. 
Shell with about six somewhat rounded whorls, which are faintly shouldered, smooth and 
shining; suture well marked, sometimes almost canaliculate; aperture long-ovate; outer lip slightly 
thickened, but not inflected or callous in the middle, toothed within; columella excavated above, with 
two folds at its base. Color rich reddish brown, with longitudinal zigzag white markings; sometimes 
the white predominates and the bands are brown. There is a row of very dark spots above the 
suture and on the middle of the body whorl, which often has alternating white spots, though it is 
sometimes wanting; sometimes there are two such bands on the body whorl. There is often a row of 
large white blotches below the suture; aperture white. 
Length, 17; diameter, 8 mm. 
Aguadilla; Ilucares; Ponce; Arroyo, Porto Eico. 
Nitidella cribraria Lamarck. 
Buccinum cribrcirium Lamarck, An. sans Vert,, vii, p. 274, 1822. 
Columbella cribraria Sowerby, Conch. Icon., xi, pi. xm, fig. 62, 1858. 
Shell solid, rather narrow, with faint, revolving striae, which are almost obsolete except at the 
base; whorls nearly flat, the upper one or two very often decollated; outer lip thickened, notched, 
and ascending above, toothed within, straight in the middle; columella nearly straight, slightly 
twisted, smooth, not plicate below. Color dark reddish brown, covered with white spots. There 
are sometimes one or two bands of lighter brown on the body whorl. There is frequently a narrow, 
darker band just below the suture, which is broken with large, squarish, white spots. 
Length, 10; diameter, 4 mm. 
Guanica; Puerto Real; Hucares, Porto Rico; many shells, all quite dark and decollated. 
1 Genus PYRENE Bolten, 1798. 
Shell ovate or subconic, with a convex spire; outer lip thickened and inflected in the middle and 
toothed within; aperture long, narrow, incurved at the middle; columellar plications wanting; external 
surface smooth. 
Type, Columbella semipunctata Lamarck. 
Pyrene ovulata Lamarck. 
Columbella ovulata Lamarck, An. sans Vert., vn, p. 295, 1822. 
Columbella ovulata Kiener, Coq. Viv., Columbella , p. 40, pi. xiv, fig. 3, 1841. 
Shell ovate-conic, moderately solid, with faint, revolving ridges, which are scarcely discernible 
on the middle of the body whorl, the shell appearing to be smooth; spire moderate, somewhat convex, 
the whorls being rounded a little and separated by a deep, almost canaliculate suture; aperture long, 
narrow, but little wider below; outer lip slightly swollen, thickened, and incurved a little in the 
middle toothed within, ascending the spire decidedly, sometimes to the suture above the penultimate 
whorl; columella slightly curved in the middle to correspond with the incurving of the outer lip, 
hardly plicate below. Color rich reddish brown, sometimes very dark, with irregular white clouds 
and spots, often forming an indistinct central band. 
Length, 15; diameter, 8 mm. 
Aguadilla, Porto Rico, one shell; AVest Indian region generally. 
There is some variation in the form of this species, certain specimens being more or less attenuated. 
Family MURICID43. 
Subfamily MURICIN^. 
Genus MUREX Linnaeus, 1758. 
Shell having a prominent, pointed spire; whorls convex, bearing longitudinal, spiny, foliaceous or 
tubercled varices; aperture round, terminated by a straight canal; operculum oval; nucleus subapical. 
Subgenus Murex s. s. 
Canal long and straight; varices three, spinous or tuberculate. 
