Bulletin - United States National Museum - Smithsonian Institution

128 BULLETIN 91, UNITED STATES NATIONAL MUSEUM.
(Coll. No. 1275). Cat. No. 250401, two specimens (Coll. No. 1274).
Cat. No. 252277, 10 specimens (Coll. No. 1586). Thirty-live specimens
with the same collector's number were returned to Colonel
Turton.
ALVANIA FARQUHARI Smith.
Plate 5, fig. 5.
Cat. No. 187057, U.S.N.M., two specimens from Port Alfred (Coil.
No. 595). Cat. No. 227740, U.S.N.M., three specimens from the same
locality (Coll. No. 835). In addition to these, I have seen 40 specimens
in Colonel Turton's collection (Coll. No. 1586).
ALVANIA ALFREDENSIS, new species.
Plate 21, fig. 8.
Shell elongate-conic, white. The nucleus consists of a single turn
which appears to be smooth. The succeeding turn is well rounded,
the next, strongly shouldered on the middle, while the last is slightly
concave immediately below the suture, and the rest well rounded.
The second whorl is marked with six slender spiral cords, which are
about as wide as the spaces that separate them. On the following
tarn a broad cord appears at the appressed summit and four slender
ones on the space between the summit and the angulated shoulder; the
shoulder itself being marked by a stronger spiral cord, while the space
anterior to it bears three about as strong as the last. On the penultimate
whorl 1 2, equal and equally spaced, spiral cords appear between the
summit and the posterior termination of the outer lip, and six upon
the base. These cords are equal and equally spaced and are about as
wide as the spaces that separate them. Aperture apparently oval;
outer lip fractured; inner lip rather thick, almost vertical, and
somewhat reflected over the base; parietal wall covered by a
moderately thick callus.
The type, Cat. No. 250392, U.S.N.M., comes from Port Alfred
(Coll. No. 1265). It has four postnuclear whorls, and measures:
Length, 1.5 mm.; diameter, 0.6 mm.
ALVANIA ALMO, new species.
Plate 21, fig. 7.
Shell elongate-ovate, thin, semitranslucent. Nuclear whorls one
and a half, well rounded, smooth. Postnuclear turns marked by two
strong, spiral keels, the first of which is situated about two-thirds of
the distance between the summit and the suture anterior to the sum-
mit, while the second is about one-fifth of the distance above the
suture, leaving the space between the two, equal to about two-fifths
of the distance. The space between the summit and the first keel,
forms a strongly sloping shoulder, while the space between the two