230 A, FE. Verrili— Mollusca of the New England Coast. 
lamellz in crossing the lower posterior ridge become a little more 
prominent, or form small crests, but fade out at the upper ridge. In 
one specimen, which does not differ in other respects, the sculpture is 
much more feeble, consisting of very numerous fine and close con- 
centric lines, which are but little elevated, but some of these, at vari- 
able distances apart, are a little stronger than the rest ; the posterior 
ridges are also nearly obsolete. The epidermis is thin, closely adhe- 
rent, light yellowish green. The interior surface is bluish white and 
lustrous, the concentric ribs showing through by translucency. The 
teeth are prominent, sharp, rather slender, strongly compressed, and 
connected by a thin, weli marked ridge along the inner edge. The 
anterior hinge-margin is gently curved, and bears, in the larger spe- 
cimens, about twelve well-formed teeth, besides four or five minute 
ones close to the cartilage. Just in front of the small triangular 
cartilage-pit, a small, somewhat prominent, obtuse tooth is developed 
on the inner surface of the hinge-margin. The posterior hinge- 
margin is decidedly longer than the anterior, nearly straight, and 
bears about fifteen distinct teeth, besides a few minute ones close to 
the cartilage-pit. A distinct ridge runs from the beak to the lower 
angle of the posterior tip. 
Length of the largest example, 15™; height, from ventral margin 
to beak, 7""; from beak to anterior margin, 6""; from beak to pos- 
terior end, 10™™. 
Station 2110, off Cape Hatteras, in 516 fathoms (No. 35,729). 
This species somewhat resembles, in size and form, L. tenuisuleata 
and LZ. minuta, but it is a thinner, more compressed, and more deli- 
cate shell, and is quite distinct in its sculpture and in the structure 
of the hinge. 
Phaseolus ovatus ? (Jeff. MSS.) 
Seguenza, Nuculidi terz. mer. Italia, R. Accad. Lincei, Ser. III, vol. i, p. 1182, pl. 
V, fig. 29-29, 1877. 
Station 2084, in 1290 fathoms, six living specimens. 
Our specimens are small and shaped nearly like Yoldia Jeffreysiz, 
with a smooth, lustrous, iridescent surface and yellowish green 
epidermis. The hinge-margin is thin, with a few very oblique and > 
appressed, low, feeble teeth, three or four in front and four or five 
behind the small cartilage-pit. Its identification is doubtful. 
