392 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Olivella jaspidea Gmelin. 
Voluta jaspidea Gmelin, Syst. Nat., p. 3442, 1792. 
Oliva jaspidea Reeve, Conch. Icon., vi, pi. xxn, fig. 58, 1850. 
Shell solid; spire rather elongated; whorls about five; base of the aperture moderately expanded; 
columella plicate throughout or nearly so, with a slightly thickened wide ridge at or near its base. 
Color generally ashy or whitish, overlaid with a slate-colored or purplish pattern. This pattern may 
be indistinct reticulations or zigzags or irregular dots and blotches, and it often shows the white 
ground in triangular patches. There is almost always a row of dark lines or spots below the suture; 
there are often faint bands on the body whorl, and sometimes dark markings on the base. 
Length, 18; diameter, 8 mm. 
Hucares; Aguadilla, Porto Rico; Caballo Blanco Reef, Vieques; Culebra Island. 
It is almost impossible to write any description which will fully and accurately cover this 
abundant and variable species. Some specimens of it arecpiite slender and not very solid; others are 
shorter and heavier, and the color pattern varies from white with faint markings to very dark. 
Olivella esther Duclos. 
Olivella esther Duclos, Monog. Gen. Oliva, pi. in, figs. 7, 8, 1835. 
Shell heavy, short, with a rather low spire whose sides are nearly straight; columella with a 
strong, high, narrow ridge near its base, and a heavy callus above, which extends to the upper part 
of the penultimate whorl; yellowish white overlaid with a pattern of brown markings, showing 
tentlike white spots, with darker, broken markings below the suture and near the base. Just at 
the base there is a distinct, solid band of brown. 
Length, 16; diameter, 7 mm. 
A large number of worn shells were found at Mayaguez, Porto Rico. 
Olivella mutica Say. 
Oliva mutica Say , Journ. Acad. Nat. Sci. Phila., ii, p. 228, 1822. 
Olivella mutica Try on , Man. , v, pi. xiv, figs. 43-55, 1883. 
Shell rather small, heavy, with usually a rather short spire, though sometimes it is lengthened; 
columella feebly plicate, having a fold near its base, strongly callous above. Color ashy white, gray, or 
bluish, often more or less marked with brownish spots or zigzag lines. In some cases portions of the 
aperture are very dark. 
Length, 7; diameter, 3.5 mm. 
A single specimen was obtained in Mayaguez Harbor. 
Olivella rotunda Dali. Plate 56, fig. 11. 
Olivella jaspidea var. rotunda Dali, Blake Report, ii, p. 134, 1889. 
Shell inflated with’ a short, rounded but pointed spire; suture canaliculate, deep and narrow-* 
aperture but slightly spread below; columellar area with a strong raised callus, which runs to the 
top of the penultimate whorl and continues around the upper whorls as a thickened glazing; the 
columellar callus is longitudinally sculptured with exceedingly delicate, microscopic lime, and is 
swollen just below its upper end. The columellar plications are numerous and strong, and between 
the upper and lower set there is an indentation of the columella within. 
Color pale ashy yellowish, with faint, irregular, broken, zigzag markings of a darker tint, and 
there is a yellowish band near the base having a darker streak below it. 
Length, 15 to 23; diameter, 7 to 11 mm. 
Mayaguez Harbor; Aguadilla, Porto Rico; a number of fine specimens. 
The series of fine shells collected by the Fish Hawk expedition seems to show that this is a valid 
species of Olivella, as good as the average species in this difficult genus. Its form is something like that 
of specimens of 0. biplicata of the West Coast, but the spire is not so elevated as in that species, nor is 
its base so expanded. 
Olivella oryza Lamarck. 
Oliva oryza Lamarck, An. sans Vert., vii, p.439, 1822; Chemnitz, Conch. Cab., Ii, 1771, pi. L. fig. 548. 
Shell small; spire rather short; whorls somewhat rounded; obtuse; columella without teeth, or 
with but faint indications of them, twisted and ending in a distinct curved plait; columellar area 
narrowly callous. Color white or milky throughout. 
Length, 4; diameter, 1.5 mm. 
