Bulletin - United States National Museum - Smithsonian Institution

SOUTH AFRICAN" MARINE MOLLUSKS. 39
appear equal and equally spaced, the anterior one forming the anterior
limit of the columella. Outer lip slightly pinched in and drawn forward
a little posterior to the middle. Aperture increasing steadily in
width from the posterior angle anteriorly.
The type, Cat. No. 149, U.S.N.M., collected by William Stimpson
on the North Pacific Exploring Expedition at Simons Bay, measures:
Length, 10 mm.; diameter, 4.6 mm.
MARGINELLA NEGLECTA Sowerby.
Plate 1, fig. 7.
Four lots of this species are in the collection of the United States
National Museum. Cat. No. 241006, one specimen from Simons Bay,
Cape of Good Hope. Three additional lots are in the United States
National Museum, from Port Alfred. One, Cat. No. 250333 (Coll.
No. 1206). Two specimens, Cat. No. 250332 (Coll. No. 1205), and one
specimen, Cat. No. 186714a (Coll. No. 73).
MARGINELLA TURTONI, new species.
Plate 1, fig. 3.
Shell vitreous, translucent, pale yellow with a narrow, pale orange
brown band forming a girdle about the middle of the shell. Spire
completely covered by the posterior edge of the outer lip, which
forms the highest point in all the turns. Left margin of the last
whorl slightly rounded in the middle, tapering gently toward the
base, rounding abruptly toward the summit. Right margin straight
in the middle, curving a little more gently toward the spire than
the base. Aperture narrow, extending to the middle of the spire;
outer lip moderately strong, slightly inbent in the middle; parietal
wall glazed with a thin callus, provided with four, equal and equally
sloping, oblique folds on the columella, the anterior of which coin-
cides with the basal margin of the columella.
The type and three specimens, Cat. No. 186718, U.S.N.M., come
from Port Alfred (Coll. No. 77) . The
diameter, 4.0 mm.
type measures : Length, 8.5 mm.
MARGINELLA CLEO, new species.
Plate 1, fig. 6.
Shell elongate-ovate, semitranslucent, vitreous, bluish white.
Spire short, broadly conic, whorls not separated by distinct sutures.
Left margin of the shell gently rounded; aperture narrow; outer lip
inbent in the middle ; parietal wall covered by a thin callus ; columella
provided with four oblique folds, of which the anterior, which bounds
the basal edge, is the strongest.
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