Bulletin - United States National Museum - Smithsonian Institution

SOUTH AFRICAN MARINE MOLLUSKS. 119
spiral cord which is a little less strong than those occurring on the
spire. Base short, almost flattened, marked with lines of growth
and exceedingly fine, spiral striations. Aperture irregular, subquad-
rate, somewhat effuse at the junction of the basal wall with the outer
lip; posterior angle obtuse; outer lip very thin, rendered sinuous by
the external sculpture, which is shown within by transmitted light;
columella very slender, decidedly curved, and slightly reflected over
and appressed to the base; parietal wall cohered with a thin callus.
The type and seven additional specimens, Cat. No. 193, U.S.N. M.,
were collected by William Stimpson on the North Pacific Exploring
Expedition at Simons Bay. The type has 14^ whorls, and measures:
Length, 20.5 mm.; diameter, 5.8 mm.
TURRITELLA KOWIENSIS Sowerby.
Four lots of this species are in the collection of the United States
National Museum, all from Port Alfred. Cat. No. 186809, one specimen
(Coll. No. 175). Cat. No. 187038, two specimens (Coll. No. 575).
Cat. No. 187039, two specimens (Coll. No. 576). Cat. No. 250405,
one specimen (Coll. No. 1278).
TURRITELLA CAPENSIS Krauss.
Cat. No. 19317, U.S.N.M., one specimen labeled South Africa
without specific locality designation.
TURRITELLA KNYSNAENSIS Krauss.
Cat. No. 192, U.S.N.M., two specimens collected by William
Stimpson on the North Pacific Exploring Expedition at Simons
Bay.
TURRITELLA, species.?
Cat. No. 187041, U.S.N. M., one specimen too poor to be positively
determined, from Port Alfred (Coll. No. 578).
TURRITELLA, species.?
Cat. No. 250397, U.S.N.M., contains the type of a young, very
slender, white species from Port Alfred, which we are unable to
identify (Coll. No. 1270).
Family LITTORIN1DAE.
Genus LITTORINA Ferussac.
LITTORINA AFRICANA Philippi.
Cat. No. 18822, U.S.N.M., 3 specimens from Natal. Cat. No.
189478, U.S.N.M., 110 specimens from Cape of Good Hope. Cat. No.
189479, U.S.N.M., 8 specimens from the same locality. Cat. No.
186811, U.S.N.M., 6 specimens from the same place (Coll. No. 177).
Cat. No. 187092, U.S.N.M., 2 specimens from Port Alfred (Coll. No.
636).