Propet 8 Fp 
Eunaticina albosutura, n. sp. Pl. xx., figs. 10 and 11. 
Shell flatly globosely obliquely oval, of 4 whorls, includ- 
ing a protoconch of 2 smooth, flat whorls, ending abruptly. 
Spire-whorls rapidly increasing; spire flatly round, apex 
scarcely exsert. Suture linear, slightly descending at the 
aperture. Aperture obliquely semi-circular. Outer lip 
curved, less behind than in front, thin, simple, scarcely re- 
tiring at the suture. Inner lip distinct, short, opaque-white, 
thick, with a marked triangular callus joining it to the outer 
lip, just within the margin of which is a shallow gutter run- 
ning to the suture. Columella long, straight, slightly re- 
flected over the umbilicus behind, narrower in front, cury- 
ing into the basal lip at rather more than a right angle. *Um- 
bilicus very open to the apex, with a central broad, low spiral 
funicle running into the middle of the columella, Sublen- 
ticular, minutely wavy, axial and spiral scratch-lines. Colour 
light-yellowish-brown, with a central white spiral, and a 
gradually widening infrasutural white band, corresponding 
with the labial callus. Operculum horny, paucispiral, nucleus 
towards the inner front part. In life there is a thin epider- 
mis; the animal can completely retract within the shell. 
Dim.—Length, 18 mm.; width, 125 mm.; height, 9 
mim. 
Locality.—Type from 25 fathoms Thorny Passage: in 
15 to 20 fathoms Investigator Strait, 2 recent; in Gulf St. 
Vincent, depth unrecorded, several alive and dead. 
Diagnosis.—The species is closely allied to Vatica umbili- 
cata, Quoy and Gaimard, or Vaticina picta, Reeve; but is 
somewhat heavier, with a rather less prominent spire, and 
with a much thicker callus in the back of the aperture. When 
lying on its base with the anterior part of the aperture to- 
wards the observer, the shell has a greater vertical slope to- 
wards the right, and does not look so round; and when the 
base is upwards and the apex away from the observer, the 
umbilicus is more largely visible. 
Vanikoro denselaminata, n.sp. PI. xxix., figs. 1, 2, and 3. 
Shell small, delicate, dull-white, globosely oval of 3% 
whorls. Protoconch one whorl and a half, apex exserted, 
with three bold spiral ribs, ending abruptly. Sutures deep. 
Spire-whorls convex, rapidly increasing; with erect axial 
lamellez, close set and becoming progressively more crowded. 
No spirals. Umbilicus large, perspective, with crowded ob- 
lique axial strie, and a bold, twisted carina winding down 
its whorls, and outside this a furrow which gets wider and 
shallower on the base of the shell. Aperture oval, truncated 
