144 Transactions.—Z ooloqy. 
points, the inner larger and simply rounded at the end; exterior marginals 
with three cutting-points, the median the largest and rounded at the 
end. 
Animal dark blue-black, sole of the foot yellowish.  (Esophagus long, 
narrow, and expanding suddenly into the stomach; the intestine turns 
forward to the left and passes round the aorta as in other species of the 
genus, and its folds are much the same as in S. zealandica. The salivary 
glands are elongated and connected together below the cesophagus. The 
heart is pale yellow and situated on the left side. The penis is thick: the 
ovotestis pale yellow. The nerve-collar. is asymmetrical, the pedal, and 
more especially the parieto-splanchnic ganglia being drawn over to the 
right side; there is an auditory vesicle on each of the pedal ganglia. 
Hab. Auckland Islands. 
Reeve gives no locality for this species, but it has since been identified 
as coming from Kerguelen’s Land; our species may prove to be distinct. 
Genus Gadinia, Gray. 
Shell conical, with a slight internal siphonal groove in front of the right 
side of the muscular impression. Head distinct; tentacles, expanded funnel- 
shaped; pulmonary cavity with a gill placed obliquely across the back of 
the neck. Jaw none. Radula rather short, teeth quadrate, arranged in 
angled transverse rows. 
Gapinia Nivea. Plate XVIIL., figs. s. to v. 
Gadinia nivea, Hutton, Jour. de Conchyliologie, 1878, p. 36. 
Shell ovate, depressed, white, with about forty radiating ribs; apex 
rather posterior, slightly uncinate. 
Length -75 or ‘8, breadth 7, height +15 to :2. 
Dentition, a 9) transverse rows forming an angle of about 90?, re- 
entrant anteriorly. Jaw none. Central tooth with the reflexed portion 
somewhat rectangular with four minute denticles on the oblique posterior 
edge. Laterals about twenty-one, each with a long pointed cutting-point 
and a small dentiele on the inner side. Marginals with a long median 
cutting-point and two small denticles on each side. 
Animal probably white, but the only specimen I have had, had been for 
some time in spirit and was not in good condition. Buccal mass very large 
and oval; esophagus short and as broad as the stomach, which turns 
sharply to the right and passes gradually into the intestine. The intestine 
passes backward, then curves to the left, then forward and to the right 
passing over the pyloric end of the stomach, it then makes a complete 
circle forward and to the left, and then passes straight to the anus which is 
on the right side of the head. The reproductive orifice is situated between 
the anus and the mouth, The penis is long, narrow, and straight, lying - 
