_ A. E. Verrill—Mollusea of the New England Coast. Meg 
eighteen living specimens; and sta. 2115, N. lat. 35° 49’ 30’, W. 
long. 74° 34’ 45”, in 843 fath. (No. 35,583), forty living. It was 
taken by Sars, off Lofoden, in 120 to 200 fath, 
TAS NIOGLOSSA. 
Benthodolium Verrill, gen. nov. 
Shell rather large, shape somewhat intermediate between Bucet- 
num and Dolium. Spire moderately elevated. Whorls convex, 
last one ventricose. Aperture large, broad, somewhat semicircular. 
Canal very short, scarcely differentiated from the aperture, formed 
chiefly by the eversion and turning up of the anterior end of the 
columella-margin. ‘The columella-lip is thickened and sinuous, ex- 
tending over the umbilical region. A distinct, well defined layer of 
enamel, on the body-whorl, connects the outer lip with the colu- 
mella. No umbilicus. The operculum is large, moderately thick, 
horny, ovate or subcordate, with a large, spiral nucleus, situated a 
little within the margin of the broad anterior end, which is slightly 
emarginate in the middle, opposite the nucleus. 
The animal, in alcohol, has a broad head, with large, stout, taper- 
ing, acute tentacles, apparently without any trace of eyes. Pro- 
boscis moderately long. The siphon is indicated only by a short 
rounded fold of the mantle-edge. The foot is short and broad, 
bluntly rounded behind, with a deep transverse groove in the front 
margin. Gills very unequal in size, the lower only about half the 
length of the upper. 
The odontophore, in the type-species, is small and.short, wath 
teeth somewhat like those of Dolium. The rachidian tooth is broad, 
with a large, sharp central cusp and six or more small denticles on 
each side; the inner lateral tooth is large, strongly curved, with a 
sharp terminal cusp, and several small lateral denticles on the outer 
margin; the two outer rows are much alike; these teeth are long, 
slender, curved, with sharp tips. On each side of the cavity of the 
proboscis there is a chitinous patch, closely covered with small chiti- 
nous scales or denticles, which are closely crowded together and im- 
bricated; the largest of these denticles are flattened and have their 
free end lanceolate and acute. 
Benthodolium abyssorum Verrill and Smith, sp. nov. 
PLATE XXXI, FIGURES 12, 12a, 120. 
Shell large, thin, stout, with inflated whorls, and a short, obtuse 
spire. Whorls five, below the nucleus, rapidly increasing, evenly 
5) > >) y 
