304 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
small, rounded, surrounded by a thick deposit of polished brown callus which 
extends nearly to the apex. Lon. of shell, 16.0; of last whorl, 12.0; of aperture, 
8.0; of operculum, 7-5; lat. of shell, 11.0; of operculum, 3.2 mm. 
U. S. S. “ Albatross,” station 8684, in Mid Pacific, N. Latitude 0° 50’, W. 
Longitude 137° 54’, in 2463 fathoms, ooze, bottom temperature 35°F. U.S. N. 
Mus. 110,750. 
It is extremely unusual to find a dextral shell with a dextrally curved opercu- 
lum, and it is possible this feature may prove to be an individual abnormality. 
The animal is blind, with a retractile proboscis and no muzzle ; small, rounded, 
blunt tentacles (in alcohol) ; a small, not twisted or recurved, subcylindric verge 
with no appendages; the siphonal fold is also simple; the foot is short and 
bluntly pointed behind; in alcohol, strongly contracted, the surface was coarsely 
wrinkled and of a whitish color. 
Two Antarctic species dredged by the ‘‘ Challenger”? between Marion Island 
and the Crozets appear to belong to this subgenus. They are Fusus (Neptunea) 
calathiscus and F. (N.) setosus of Watson. In looking over the other 
reports of deep-sea work I do not find any others which can, with probability, be 
referred to this group. Watson’s supposition that his species might belong to 
Buccinopsis (= Liomesus), though having some ground in the conchological 
features and operculum, is negatived by the fuller information now supplied. 
Buccinidae. 
TWRUNCARIA Apbams anp REEVE. 
Truncaria Adams and Reeve, Voy. Samarang, Zool. Moll., 1850, p. 33 (type | 
Buccinum jfilosum Ads. and Rve. op. cit. pl. 11, fig. 138); H. and A. Adams, 
Gen. Rec. Moll., 1853, 1, p. 111, (ex parte) ; H. Adams, in Carpenter, P. Z.S., 
London, 1863, p. 344; Tryon, Man. Conch., 1882, 4, p. 8. 
Of the species referred to this genus in the Genera of Recent Mollusca only 
one, the type, really belongs to it, as was recognized by Henry Adams, according 
to Carpenter, in 1863. This came from the China Sea. I now have the pleasure 
of adding a second species, and of completing the diagnosis of the hard parts, 
by the information that the operculum is narrow, elongate-oval, concentric, with 
the nucleus apical. 
Truncaria brunneocincta Dat. 
Plate 2, figure 6. 
Cominella brunneocincta Dall, Proc. U. 8S. Nat. Mus., 1896, 18, p. 11. 
Shell compact, solid, livid pinkish, with narrow, brown, distant, spiral lines 
and a few brown flammules near the suture ; nucleus smooth, small, white, of two 
