PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 403 
Sculpture very numerous (70 to 80 or more) radiating ribs, fine later- 
ally, increasing in strength on each side to the middle, where there are 
two or three ribs considerably larger than the rest, with wider intervals; 
the ribs and intervals are crossed by fine, close, meu lines of al. 
_ Interior with radiating lines corresponding to the external ones. 
Length, 4™; height (beak to ventral edge), 7"; thickness, 4"".  Sta- 
tion 880, 255 fathoms, scarce; 891 to 894, 365 to 500 fathoms, common. 
Timea gibba (= Lima gibba Jettreys, op. cit., p. 428) also differs but 
little from our specimens. 
Pecten fenestratus Forbes (?). 
Report on Mollusca, &c., of Agean Sea, p. 146, in Proc. British Assoc. for 1843. 
Pecten inequisculptus Pieri (teste J omega 
A small, but elegantly colored and sculptured, enaaies Pecten was 
taken ae at station 872. This I refer doubtfully to the above-named, 
Mediterranean deep-water species. In our two examples the upper valve 
is finely and regularly cancellated, with fine radiating and concentric 
lines; the under valve is covered with fine, raised, concentric ribs only. 
Ears prominent. Color whitish and different shades of red and brown, 
irregularly mottled. 
Pecten, sp. (near P. opercularis). 
Fragments of a large and peculiar Pecten occurred at stations 873 and 
874. They closely resemble, in sculpture, the P. opercularis of Europe, 
except that the large ribs are triangular and carinated at summit, 
instead of rounded. These large ribs are separated by equally wide, 
concave interspaces, which, like the ribs, are marked by slightly con- 
cave, radiating furrows, and the surface of these furrows is covered with 
thin, concentric, slightly raised, wavy plates, the waves being limited 
by the fine radiating ridges between the grooves. Interior of valves 
with broad, flat grooves, alternating with flat ribs of the same width- 
Color grayish white, the ribs pale reddish. 
List of species enumerated in the preceding article. 
One asterisk signifies that the species is an addition to the New England or North American fauna; 
two, that it is a newly discovered species; E= European; G— Greenlandic ; M—middle region of 
New England, or both north and south of Cape Cod; N=northern coasts of America (Cape Cod to 
Labrador) ; s—southern; 0 = oceanic; P= North Pacific. } 
ety Heteroteuthis tenera V. *qEe. Bela rugulata (Moller). 
* GE. Gonatus amenus (M6ll.) Gray. *p,E. Bela simplex (Middend.). 
salt Calliteuthis reversa V. ** ~ Bela hebes Verrill. 
** — Alloposus mollis V. sili Pleurotoma Agassizii V. & S. 
*o.E. Argonauta Argo Linné. ** — Pleurotoma Pandionis V. & 8. 
*q.p. Bela Pingelii (Moller). ** — Pleurotoma Carpenteri V. & S. 
*n.u. Bela Sarsii Verrill. iva Taranis pulchella V. 
*p.n. Bela tenwicostata Sars. *.  Taranis Morchii (Malm) Jeff. 
n.u. Bela Trevelyana (Turton). *s,  Marginella roscida? Ray. 
N. Bela cancellata (Migh.) St. *@g.x. Tritonofusus latericeus (MOL) 
*wn.E. Bela impressa Morch. Morch. 
*n.G.p. Bela ecarata (Moller). ** — Neptunea (Sipho) celata Verrill. 
