LAMELLIBRANCHIATA. 
333 
Adhering to Pinnce taken in Cork Harbour, Mr. Humphreys. 
In shell-sand from Kilkee, Co. Clare, W. T. Birterbuy Bay, Mr. 
Barlee. 
Genus Ostrea. 
O. edulis, Br. Turt. 
Gregarious in suitable localities around the coast, differing much in 
size and quality, as an article of human food, on different beds. 
March 1, 1848. — Carrickfergus Oysters. — The four largest picked from 
about 500 were brought me to-day. I weighed them before being 
opened, and found one 2 lbs., another If lb. (imperial weight), and the 
two others about 1^ lb. each. I weighed the oysters themselves, after 
being extracted, and found the two largest about \\ oz. each, the others 
somewhat less. The oysters from which these were picked are now sold 
at 16s. for 124. My specimens were dredged from 25 fathoms. 
March 15, 1848. — The following dredged from about 25 fathoms : — 
Length of shell . . . . 5^ to 6^ inches. 
Breadth 5 — 5% — 
Depth .... valves closed 2\ — 
March 15, 1848. — Five Carrickfergus oysters brought to me weighed 
from 1 lb. 13£ oz. to 2 lbs. 1 oz. 
Family Pectenid^:. 
Genus Pecten. 
P. maximus, Br. Turt. 
“ Portmarnock, rare ; more plentiful at Bray ; and common in L. 
Strangford.” Brown. Along the Antrim and Down coasts, where it is 
commonly called Clam, and used as human food, though not so generally 
esteemed as the scallop (P. opercularis ), W. T. Dredged in Clew and 
Killery Bays. 
1834. — Clam-shell filled with oil, in which a lighted wick was placed, 
was the only light given us in the inn at Arran. It was placed on the 
hob of the fire-place.* 
P. opercularis, Turt. 
The scallop is the most common species both as to distribution round 
the coast and numbers ; gregarious ; brought chiefly from Strangford 
Lough to Belfast market as an article of food. The animals are boiled 
and taken from the shells before being brought to market, where they 
are sold by measure. Dredged from about 10 to 12 fathoms, coralline 
region ; in Belfast and Strangford Loughs. On the Dublin and Wick- 
low coasts the shells are most vividly and beautifully coloured. Dredged 
in Clew and Killery Bays. Yar. lineatus I have dredged in Belfast Bay, 
as Mr. Warren likewise has off the Wicklow coast. He has likewise ob- 
tained a few on the beach at Portmarnock. 
P. sinuosus, Turt. 
Commonly met with among oysters and dead bivalve shells ; it is occa- 
* Pecten Jacoibceus is noticed by Turton, Conch. Diet., as found in Dublin Bay ; 
but in his British Bivalves it is spoken of doubtfully as a British species. It is 
given as a North of Ireland species in Smith’s Catalogue of Recent Shells pub- 
lished in Wern. Mem., vol. viii/part 1. But positive information respecting it is 
required before it be included in our Fauna, in which I do not anticipate that 
it will ever properly hold a place. 
