232 A. E. Verrill — Mollusca of the New England Coast. 



Limopsis tenella Jeffreys. 



JeflVeys, Aun. :Mag. Nat. Hist., Nov. 187G, p. i.-i.S. 



Station 2037, K lat. 38° 53', W. long. 69° 23' 30", in 1V31 fathoms ; 

 and 2038, N. lat. 38° 30' 30", W. long. ()9° OS' 2.")", in 2033 fiitlioins. 



I have compared tliese specimens with types in Mr. Jeffreys' col- 

 lection at tlie National JMuseuin. 



It was first taken by the Valorons Expedition, in 14.')0 fathoms. 



Pecten leptaleus Vemii, sp. nov. 



Shell small, thin, delicate, well rounded, resembling P. puslitlosus 

 in form, but with much finer sculptnre. 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 

 ])rominent part is nearly smooth ; these concentric lines continue over 

 tlie ears, becoming qnite prominent on the antei'ior ear, but fine and 

 close on the i)OSterior one. The intervals between the concentiic 

 lamellfe 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 lamella^ 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 lamelhv. Hie lower valve is smaller and less convex than 

 the up])er, with the outer portion of its margin 1)ent downward. The 

 sculpture c()nsists only ol a very fine, close, concentric lines, except on 

 the eais which are covered with numerous, close, radiating lines, which 

 are roughened by the concentric lines. Color yellowish white. 



Length, 7""" ; height from venti'al margin to dorsal edge, (j'5""" ; 

 length of dorsal mnrgin, 4""". 



'^Fwo sjtecimens were taken, ott' (Jape llatteras, at station 2lo9, in 

 142 fathoms (No. 38,413). 



Pecten fragilis .Teffrey.s. 



Jeffreys, Aim. Mag. Nat. Hist., Nov., 187G, p. 424; Proc. Zool. Soc. London, for 

 1879, p. 56J, pi. 45, fig. 1. 



Station 2115, oft' Cape Ilatteras, in 843 fathoms, two sj)ecimens 

 (No. 35,5GG). 



