LAMELUBKANXHIATA. 333 



Adhering to Pintice taken in Cork Harbour, Mr. Humphreys. 

 In shell-sand from Kilkee, Co. Clare, W. T. Birterbuy Bay, Mr. 

 Barlee. 



Genus OsTREA. 

 O. edidis, Br. Turt. 



Gregarious in suitable localities around the coast, differing much in 

 size and quality, as an article of human food, on different beds. 



31nrch 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 1^ lb. (imperial weight), and the 

 two others about \\ lb. each. I weighed the oysters themselves, after 

 being extracted, and found the two largest about \\ oz. each, the others 

 somewhat less. The oysters fi'om Avhich these were picked are now sold 

 at 16s. for 124. My specimens were dredged from 2.5 fathoms. 



March lo, 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. 



Famih/ Pectenid.^. 

 Gemts Pecten. 

 P. maximiis, 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 Chun, and used as human food, though not so generally 

 esteemed as the scallop (P. opcrcidaris), 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. ojjerctdari's, 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. Var. liticatas I have dredged in Belfast Bay, 

 as Mr. Warren likewise has off the Wicklow coast, lie 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 Jacobteus 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. 



