268 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Gemmula eldorana Datt, n. sp. 
Plate 14, figure 8. 
Shell small, solid, chalky with an olivaceous periostracum, decollate with about 
four and a half remaining whorls; suture obscure, with a narrow slightly elevated 
band in front of it, and on the last whorl a gradually developing similar band 
behind it; in front of the first band is a depression with two or three incised 
spiral lines, followed by a strong nodulous keel corresponding to the anal fasciole, 
in front of which again are (on the spire one, on the last whorl four) strong, 
simple, distant, spiral threads, of which the second is strongest and followed by 
the widest interval, the series preceded by eight or ten smaller, closer, simple, 
spiral threads which extend to the end of the canal; axial sculpture of incre- 
mental lines and on the earlier whorls obscure wrinkles connected with the 
nodules on the keel, which number on the penultimate whorl about twenty-four and 
on the last whorl become obsolescent; aperture short, lunate; outer lip sharp, 
with a well marked sulcus at the principal keel; body with the sculpture 
erased ; pillar very short, twisted, obliquely truncate in front; axis not pervious ; 
canal short, recurved, with flaring edges. Lon. of three whorls, 8; of last 
whorl, 6; of aperture, 4; max. diam. 5 mm. Operculum small, narrow, pale 
brown, nucleus apical. 
U. S. S. “ Albatross,”’ station 3392, Gulf of Panama, in 1270 fathoms, hard 
bottom, temperature 36°.4 F. U.S. N. Mus. 128,120. Also at station 2807, 
near the Galapagos Islands, in 812 fathoms, ooze, temperature 38°.4. 
Another species of the same group but with distinctive sculpture. 
Gemmula vicella Datt, n. sp. 
Plate 14, figure 5. 
Shell small, stout, subturrited, the nuclear whorls eroded, the spire longer than 
the aperture, with about six whorls in addition to the nucleus; white with a gray, 
olivaceous periostracum, the aspect much like a stumpy e/a ; suture distinct, 
not appressed, whorl in front of it slightly constricted, sloping to a prominent 
keel at the shoulder; this slope is apparently coincident with the anal fasciole and 
is sculptured only by curved lines of growth and faint indications of axial ribs, 
which become more prominent in front of the shoulder, are stronger on thie 
earlier whorls and number about fifteen on the penultimate whorl; these ribs are 
feeble, with wider interspaces, rounded, and protractive, becoming obsolete on 
the base and most of the last whorl; spiral sculpture strongest in the shoulder 
keel, which is a little nodulous where it crosses the ribs; in front of it are three 
to five spiral threads (on the spire) of which the second is strongest and faintly 
nodulous, the others feebler, more adjacent and simple; these become more 
numerous by intercalation, the last whorl having about sixteen between the keel 
and the end of the canal; the lines of growth are rather strong and give the 
