320 JOURNAL OF SCIENCE. 
is much more gradual, and its contraction from the angulation on 
to the mouth is more rapid. 
TURRITELLA CARLOTTA, Watson, l.c. xv., p. 222. 
ot. 162... April 2,.18745.. Lat39°..10'. 30°, 3.3 enero ae 
E.. Moncceur Island, Bass Straits. 38-40 fms., sand. 
St. 1674... June 27, 1874... luat,- Al, -4. )S.0 Jonge o1Q alt, 
Queen Charlotte Sound, New Zealand, 10 fms., mud. 
Shell—High, narrow, conical, with slightly-impressed suture 
and an angular flattened base, thin, translucent, with fine ruddy 
spiral threads. Sculpture —Longitudinals—these are fine, 
thread-like, slose-set curved lines of growth. Spirals—there are 
two principals, two secondary, and very many minor spirals, but 
the relative value of these varies a good deal; they are little 
raised, but distinct. The base is covered with fine crowded spi- 
rals, of which those near the edge are stronger than the rest. 
The microscopic system of spirals is fine, sharp, and distinct. 
Colour, yellowish ashy white, with a suffused ruddy brown on the 
upper part-of the whorls, and a stronger shade of the same colour 
defining the more important spirals. The colour becomes alto- 
gether paler up the spire, and the apex is white. Sfzve very per- 
fectly conical; but the profile lines are interrupted by the im- 
pressed sutures. Afgex small, rounded, smooth, and glossy, 
consisting of 144 embryonic whorl ; the next whorl is slightly 
angulated, after which the regular sculpture begins. Whorls 15, 
very slightly convex on the sides, contracting gradually upwards 
into the suture; towards the bottom of the whorl the contrac- 
tion into the suture is shorter, straighter (z.e. less convex), and 
more rapid ; they are of very gradual and regular increase. To- 
wards the upper part of the spire the curve of the profile line of 
each whorl becomes increasingly stronger. The base is flat, very 
slightly conical, sharply angulated, and not contracted at the 
edge. Suture very slight, but well defined. d/outh small, angu- 
larly rounded, a little higher than broad. Outer-lip a little drawn 
in and advancing on the edge of the base. descends straight to 
the lower outer angle, is flat across the base, and a little patulous 
in front of the pillar-point. The generic sinus in the outer-lip 
is parabolic in form. Inner-lip—There is not (though the spe- 
cimens are full-grown) even a glaze across the body nor round 
the base of the pillar ; but on older specimens this may probably 
exist. Pzllar is a little concave, rather direct, with a thin 
rounded edge. Efidermis a very thin and delicate calcareous 
membrane obviously not extraneous; it adheres to the top of 
the spirals, and stretches across their furrows. It is sparsely 
cleft by minute gaping rents in the direction of the lines of growth, 
and the microscopic sculpture ot the shell is traceable in it, but 
rather on its under than its upper surface. H. 0.95, B.0.28, least 
0.25. Penultimate whorl, height 0.15. Mouth, height 0.16, 
breadth, 0.14. 
