Bulletin - United States National Museum - Smithsonian Institution

54 BULLETIN 91, UNITED STATES NATIONAL MUSEUM.
BULLIA ALFREDENSIS, new species.
Plate 3, fig. 2.
Shell elongate-conic, cream }^ellow marked with a rust brown
band which extends over a little more than the anterior half between
the sutures. This band is not of uniform purity but consists of a
series of dark and lighter elements which give the whorls the false
appearance of having brown ribs. '(Nuclear whorls worn.) Post-
nuclear whorls rounded, narrowly, tabulatedly shouldered at the
summit, marked by 10 incised spiral striations of which the posterior
six are about equally strong and occupy the posterior third of the
whorls between the sutures. These are much finer and closer spaced
than the other four which divide the remaining space between the
sutures into subequal sections. Periphery of the last whorl well
rounded. Sutures strongly constricted. Base slightly produced,
marked like the anterior two-thirds between the sutures, the incised
lines being a little closer on the extreme base than they were on the
periphery. Aperture suboval, channeled anteriorly; posterior angle
decidedly obtuse; outer lip thin; columella curved, provided with a
strong callus which also extends over the parietal wall.
The type, Cat. No. 187011, U.S.N.M., comes from Port Alfred
(Coll. No. 545). It has eight whorls, and measures: Length, 27 mm.;
diameter, 9.2 mm.
Three additional lots from Port Alfred are in the collection of the
United States National Museum, as follows: Cat. No. 187012, one
specimen (Coll. No. 546); Cat. No. 250445, one specimen (Coll. No.
1318); Cat. No. 249736, one specimen (Coll. No. 1008).
BULLIA ALMO, new species.
Plate 35, fig. 4.
Shell broadly elongate-conic. Nuclear whorls a little more than
one, white, well rounded, smooth. Postnuclear whorls light orange,
marked with a strong sloping shoulder which extends over the
posterior two-fifths of the whorls between the sutures, the anterior
limit of the shoulder forming a decided angle. Surface of the shell
marked by numerous, slightly retractive axial lines of growth and
fine, incised, spiral lines; the latter are chiefly confined to the sloping
shoulder, only two or three extend anterior to this. The incised
fines on the shoulders increase in number from the early whorls to the
last. They are of irregular size and spacing. About a dozen strong
ones, and about half as many less strong, occur upon the shoulder of
the last turn. Aperture large, channeled anteriorly. Posterior
angle acute; outer lip thin; columella sigmoid; parietal wall glazed
with a thin callus.
The type, Cat. No. 250446, U.S.N .M., comes from Port Alfred
(Coll. No. 1319). It has 8£ postnuclear whorls, and measures:
Length, 22 mm.; diameter, 9 mm. .