227 
Imbriearia porphyria, spec. nov. PI. viii., figs. 5, 5a. 
Shell ovate-conic, solid, of five whorls, exclusive of nucleus. 
Nucleus two whorls, smooth, flattened, papillary. Spire short, 
slightly acute, about one-fourth the total length of the shell, 
whorls subconvex, roundly angled at lower part, longitudinal 
plice indistinct, low, inequidistant, closer on the posterior whorls, 
with finer distinct regular longitudinal strize under the lens. 
Spiral stria, about seven on the penultimate whorl, sublenticular, 
flat crowded, crossing the plice. Sutures distinct, very slightly 
margined, and minutely crenulated by the longitudinal striz. 
Body-whorl swollen just below the suture to form a rounded 
shoulder, then with a regular sloping curve to the anterior 
extremity. Fine sublenticular longitudinal growth-lines, close, 
most marked at the suture, and behind the shoulder, less marked 
near the aperture; spiral striz close-set, low, most marked 
behind the shoulder, and just above the notch, very faint over 
the rest of the whorl. Aperture narrow, widest in the middle, 
outer lip nearly straight, simple, acute, smooth. Inner lip 
straight, very thin polished callus. Three very distinct, equal, 
nearly transverse, equidistant plaits occupying the middle third 
of the aperture with an obsolete one immediately below. Orna- 
ment, uniform mauve tint inside and out, nucleus dark mauve ; 
dead shells are white. 
Length, 10 mm.; breadth, 5°75 mm. ; spire, 2:25 mm. ; length 
of aperture, 7°25, width, 1-25. 
Habitat.—In and outside Backstairs Passage, Investigators 
Straits, dredged alive at 15 to 20 fathoms, five; and 36 recent 
and dead (Verco). West Coast of Yorke Peninsula (Tate ). 
Types in my cabinet. 
P. Fischer in his Manuel de Conchyliologie, p. 614, says Imbri- 
carta of Schumacher has no operculum, Theshell I describe has 
one, but I leave the discussion of its generic location for a 
future communication. 
Phos tasmaniea, Ten.- Woods (Josepha). Pl. vi., figs. 5, 5a ; 
Pl. viii., figs. 6, 6a. 
Shell ovately fusiform, solid, opaque. Whorls including the 
nucleus 9; nucleus of two whorls, smooth, inflated. Spire-whorls 
convex, angled at their centre, behind this slightly excavated by 
a rather wide, conspicuous groove, behind this a prominent 
rounded subsutural band. Longitudinal plice numerous, regular, 
16 in the penultimate whorl, slightly coronated at the angle, and 
forming slightly elongated nodules on the subsutural band. Dis- 
tinct engraved spiral lines, crossing the plice, three or four in 
front of the angle, two or three in the groove, producing, if well 
marked, a row or two of small round granules there. Body- 
