580 
A. E. Tern'll — Catalogue of Marine MoUmca. 
Limaea snbvota (Jeffreys >. 
Lima subovnta Jeffreys. Aunals and Mag. Nat. Hist.. Nov.. 1876, p. 427; Proc. 
Zool. Soe. Loudon. 1879. p. 563. pi. 45. fig. 2. 
Limaa subovata Terrill. Arner. Journ. Sei., u. p. 392. Nov., 1880; Proe. U. S. 
Nat. Mus., iii. p. 402, Jan., 1 881. 
Off Martha’s Vineyard, stations 880, 891 to 891, 947, 994, 997 to 
999, in 252 to 500 fathoms, common ; dead shells at station 949. in 
100 fathoms. 
North Atlantic, 1450 fathoms, — “Valorous” Exp.; Shetland and 
Faroe Is., 125 to 542 fathoms; west of Ireland, 664 to 1443 fathoms; 
off Azores, 1000 fathoms (t. Jeffreys). Mediterranean, — Monterosato. 
Pecten glyptus Terrill, sp. nov. 
Pecten. sp.. near opercuJaris Terrill, Proc. Nat. Mus.. iii, p. 403, 1881. 
Shell large, rather thin, compressed, both valves a little convex, the 
lower one a little flatter; ventral margin evenly rounded ; the dorsal 
edges are nearly straight and meet at rather more than a right angle ; 
ears rather large, the anterior one with a triangular notch, beyond 
which the end is rounded to the dorsal angle ; surface with eight or 
more unequal ribs; posterior one triangular, truncated at the end, 
with three or four thin ribs. Surface of the valves with about sev- 
enteen or eighteen large triangular ribs, separated by wider, broadly 
concave interspaces. The whole surface, both of the ribs and inter- 
spaces, is regularly covered with flue, radiating, raised lines ; the 
interspaces between these are crossed by very regular, concentric 
scallops, formed by thin, raised lines. On the lower valve there are 
similar large radiating ribs, but the tine radii and concentric scallops 
are obsolete. 
Color, of the upper valve, orange brown, paler between the ribs. 
Diameter, more than 2 inches (50 mm ). The larger specimens are 
all fragmentary ; on some of these the distance from the crest of one 
rib to another is 7 mm . 
Off Martha’s Vineyard, stations 871, 873, 874, 876, 949, in 85 to 
120 fathoms. 
Pecten TitretlS (Chemnitz). 
Pecten > it reus Loven. Ind. Moll. Scand. Occid. [p. 31], 1846 (iJescription). 
G. O. Sars. op. eit., p. 21. pi. 2, figs. 5, a, b. 
Terrill, Amer Journ ScL, xvi. p. 378. 1878. 
