Bulletin - United States National Museum - Smithsonian Institution

100 BULLETIN 91, UNITED STATES NATIONAL MUSEUM.
sidered cotypes. They come from Port Alfred (Coll. No. 1221). The
young specimen has seven postnuclear whorls, and measures
Length, 5.1 mm.; diameter, 2 mm. The adult specimen has lost the
nuclear turns; the 12 postnuclear turns measure: Length, 8.6 mm.;
diameter, 2.4 mm. Cat. No. 249676, U.S.N.M., contains another
specimen from the same place (Coll. No. 948). Cat, No. 250349,
U.S.N.M., contains the nuclear tip of another specimen from the
same locality (Coll. No. 1222).
TRIPHORIS FUSCOMACULATA Smith.
Four lots of these specimens are in the collection of the United
States National Museum, all from Port Alfred. Cat, No. 186806,
three specimens (Coll. No. 172). Cat. No. 227718, three specimens
(Coll. No. 813). Cat, No. 227723, two specimens (Coll. No. 818).
Cat. No. 249684, two specimens (Coll. No. 956).
TRIPHORIS SMITHI, new species.
Plate 10, figs. 7, 8.
Shell very elongate-conic; yellowish white; irregularly flecked with
blotches and streaks of pale brown. Nuclear whorls partly decol-
lated. The first of the remaining turns is a little larger than the suc-
ceeding and is smooth. The three following volutions increase very
gently in size and are marked by two strong spiral cords, of which
the first is at the summit and the second some little distance above
the periphery, the space between the two, which is deeply concaved,
being about twice as wide as either of the keels. Postnuclear whorls
moderately rounded, ornamented with three strong spiral cords of
which the median is a little stronger than the other two. The first of
these is at the summit and the third a little above the suture. The
sulci separating the median from the other two cords are equal to the
median cord in width. In addition to the spiral sculpture, the
whorls are marked by axial ribs which are about half as strong as the
spiral cords. Of these ribs, 16 occur upon the first, 18 upon the sec-
ond, 20 upon the third and fourth, 21 upon the fifth, 22 upon the
sixth, and 24 upon the remaining turns. The junction of the axial
ribs and the spiral cords form feeble tubercles. Sutures feebly
impressed, scarcely differentiated from the sulci between the spiral
cords. Periphery of the last whorl rendered angular by a strong
spiral cord; the sulcus between which and the cords adjacent to it
posteriorly, is crossed by the continuations of the axial ribs. Base
very short and slightly rounded, marked by two spiral cords which
are less strong than the peripheral one, separated by deep spiral
grooves. Aperture moderately large, channeled anteriorly and pos-
teriorly; outer lip forming a decided angle at the junction with the
basal lip, rendered decidedly wavy at the edge by the external sculp-
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