232 A. FE. Verrill—Mollusca of the New England Coast. 
Limopsis tenella Jeffreys. 
Jeffreys, Ann. Mag. Nat. Hist., Nov. 1876, p. 433. 
Station 2037, N. lat. 38° 53’, W. long. 69° 23’ 30’, in 1731 fathoms; 
and 2038, N. lat. 38° 30’ 30”, W. long. 69° 08’ 25”, in 2033 fathoms. 
I have compared these specimens with types in Mr. Jeffreys’ col- 
lection at the National Museum. 
It was first taken by the Valorous Expedition, in 1450 fathorns. 
Pecten leptaleus Verrill, sp. nov. 
Shell small, thin, delicate, well rounded, resembling P. pustulosus 
in form, but with much finer sculpture. The umbos small, pointed. 
The anterior ear is prominent with a rather deep, rounded notch in 
the upper valve and a narrower and deeper notch in the lower valve; 
the posterior ear is small and short. The sculpture on the upper 
valve consists of numerous, thin, rather close, concentric riblets which 
become fewer and less elevated toward the umbos of which the most 
prominent part is nearly smooth; these concentric lines continue over 
the ears, becoming quite prominent on the anterior ear, but fine and 
close on the posterior one. The intervals between the concentric 
lamellze are crossed by numerous, very thin, raised lines ~ which 
become obsolete on the umbos, and nearly so on the anterior ear. 
These radiating lines in crossing the concentric lamellz form minute, 
rounded granules which are most distinct on those near the margin, 
where they are very numerous, appearing like strings of minute beads 
along the lamella. The lower valve is smaller and less convex than 
the upper, with the outer portion of its margin bent downward. The 
sculpture consists only of a very fine, close, concentric lines, except on 
the ears which are covered with numerous, close, radiating lines, which 
are roughened by the concentric lines. Color yellowish white. 
Length, 7"; height from ventral margin to dorsal edge, 6°5™™; 
length of dorsal margin, 4™™. 
Two specimens were taken, off Cape Hatteras, at station 2109, in 
142 fathoms (No. 38,413). 
Pecten fragilis Jeffreys. 
Jeffreys, Ann. Mag. Nat. Hist., Nov., 1876, p. 424; Proc. Zool. Soe. London, for 
1879, p. 561, pl. 45, fig. 1. 
Station 2115, off Cape Hatteras, in 848 fathoms, two specimens 
(No. 35,566), 
E 
