GASTROPODA. 3 
(14°5 mm. in length), similar in character, was obtained off Hut Point, 11th November, 
1902, which probably belonged to a more or less adult specimen of this species. 
The genus Boreofusus of Sars is a synonym of Troschelia, and possibly Buccino- 
fusus of Conrad, which has priority, may also be congeneric. 
TROPHON LONGSTAFFI. 
(Pl. L, figs. 3-3d.) 
Shell ovately fusiform, white, rather thin, longitudinally delicately plicate ; whorls 
6-7, the two apical forming the protoconch (fig. 3b.) globose, smooth, glossy ; the rest 
convex, rather shouldered above, separated by an oblique deep suture, ornamented with 
numerous thin lamelle, which are directed forward, and often somewhat produced at the 
upper part, especially upon the body-whorl. They vary in number from 10 to 20 upon 
the last whorl, but generally average about 16. The surface is also sculptured with 
very fine spiral strive both between the lamelle and upon their upper surface, but their 
lower is smooth. The last whorl is contracted below and produced into a short oblique 
snout which is directed towards the left. The aperture is pear-shaped, with the canal 
considerably longer than the spire, smooth and white within. The outer lip in the most 
adult specimen is a little thickened within, sharp at the edge, and somewhat patulate 
and united above, with a distinctly defined callosity which covers the columella. The 
anterior canal is short and oblique. 
Length, 41 millim.; greatest diameter, 25°5 ; aperture, with canal, 25 millim. long, 
12 broad. 
Flagon Point, 1 mile N. of ship, 20 fathoms ; holes 4, 12, in 25-41 fathoms. 
The animal externally appears to be normal, the tentacles are short, compressed, 
pointed at the tip, with the minute sessile eyes situated about midway upon the outer 
edge. ‘The operculum (figs. 3c., 3d.) is elongate-ovate, rather thin, of a reddish horn 
colour, slightly convex externally, marked with distinct lines of growth from the apical 
nucleus, and also exhibiting a few arcuate rays, which curve from the apex to the inner 
margin. The lower concave surface is finely wrinkled, with a broad, glossy, reddish and 
somewhat thickened margination on the outer edge, and is dull upon the rest of the 
surface. 
This species does not compare closely with any of the described forms. Perhaps 
the Patagonian 7. laciniatus is its nearest relation. It is, however, rather different in 
form, its whorls are broader, and the lamella are not produced above into hollow spine- 
like projections. The aperture also is devoid of the orange or brown colour which 
distinguishes the South American shell. 
TROPHON COULMANENSIS. 
(Plate L, figs. 4—4b.) 
Shell fusiform, turreted, white within and without, ornamented with somewhat 
distant thin lamelle, about ten on a whorl, which are produced at the upper part or 
