Bulletin - United States National Museum - Smithsonian Institution

SOUTH AFRICAN MARINE MOLLUSKS. 163
whorl decidedly angulated, marked by a broad spiral cord. Base
short, slightly rounded, marked by 14 somewhat flattened spiral
cords of somewhat irregular width, increasing slightly in width
from the periphery to the umbilical area. The spaces that separate
them are also of somewhat irregular width, but in general are almost
as wide as the cord. In addition to the spiral sculpture, the base is
marked by numerous coarse lines of growth which cut the cords but
do not render them tuberculated. Aperture subcircular; posterior
angle obtuse; outer lip thin; columella strongly curved and re-
flected over the base as a slight callus at the umbilical area.
The type and two specimens, Cat. No. 249765, U.S.N.M., come
from Port Alfred (Coll. No. 1037). The type has a little more than
five postnuclear whorls, and measures: Altitude, 12.8 mm.; greater
diameter, 12 mm.
Two additional lots are in the collection from Port Alfred, as fol-
lows: Cat. No. 187103, U.S.N.M., one specimen (Coll. No. 647); Cat.
No. 249764, U.S.N.M., two specimens (Coll. No. 1036). Another
specimen comes from Albany or Peddie, South Africa, Cat. No.
97988, U.S.N.M.
This shell resembles in a general way C. eucosmia, but differs in
being much more narrowly conic, and also in detail of sculpture.
CALLIOSTOMA, species ?
Cat. No. 42845, U.S.N.M., contains two young specimens of a
species from the Cape of Good Hope winch we are unable to refer to
any of the known forms. Cat. No. 97988a, U.S.N.M., a young specimen
of the same species from Albany or Peddie, South Africa.
Genus EUCHELUS Philippi.
EUCHELUS NATALENSIS Smith.
Cat. No. 250501, U.S.N.M., two specimens from Port Alfred (Coll.
No. 1374).
Genus CYNISCA H. and A. Adams.
CYNISCA FORTICOSTATA Smith.
Cat. No. 186882, U.S.N.M., three specimens from Port Alfred (Coll.
No. 252). Cat. No. 227780, U.S.N.M., three specimens from the
same locality (Coll. No. 875).
CYNISCA GLORIOSA, new species.
Plate 31, figs. 6, 7, 8.
Shell depressed helicoid, reddish brown excepting the tips of the
tubercles, which are lighter, and the apex, which is white. Nuclear
whorls, a little more than two, well rounded, smooth, separated by a
quite strongly channeled suture. Postnuclear whorls ornamented
by strong spiral cords, of which three occur upon the first, the first