628 Proceedings of the Royal Irish Academy. 



iv. R. I. A. Exp., 1886, Long Island Sound, 2>\-f) fms., and Berc- 



liaven, 5-10 fms. (Chaster, '98). 

 Y. Coast of Clare (Warren Coll., f. Thompson, '56) : Aran I. and 



Birterbuy Bay (Barlee, f, "Forbes & Hanley, '53) : Ronndstone 



(Alcock, '65 ; Standen, '95) : Achill I. (Mrs. Tatlow & 



Praeger, '98). 

 vi. Killala Bay (Miss A. Warren, '92) : Narin Strand, co. Donegal 



(G. P. Parran). 

 Bistrihution. — Iceland. Pinmark to Mediterranean. Greenland. 

 N. E. America. Bering Strait. 



Family. — Eetcikid^. 



Kellia mlorlicularis (Montagu). 



i., ii., iii., iv., v., vi. 



i. "Porcupine" Exp., 1869, Lough Poyle, 10 fms. (Jefireys, '81) r 

 Magilligan (Belfast Mus., f. Praeger, '89) : off Ballycastle, dead 

 (Chaster, '97a) : Larne (Waller Coll. in Dublin Mus.) : Belfast 

 Lough, 10 fms., dead, and Turbot Bank (Hyndman, '58): 

 Strangford Lough, 7-25 fms., and off entrance, 12-15 fms., 

 living (Dickie, '58). 



ii. Portmarnock (Adams, '78) : North Bull, Dublin Bay (Warren, 

 f. Adams, '78) : Dublin Bay (Turton, '19 ; Warren, f. Thomp- 

 son, '56 ; Kinahan, '61) : Dalkey Sound, &c. (Walpole, '53a). 



iii. Tramore Bay, co. Waterford (Walpole, '52) : Youghal (Ball, f. 

 Thompson ms.) : below Cove, co. Cork, in stone (Humphreys, 

 '45) : Lough Hyne, living (A. B. N.) : B. I. A. Exp., 1885, 

 1886, 1888, off S. coast of Cork, 4-50 fms. (Chaster, '98, 

 A. E. '^.). Var. lactea. Brown. E. I. A. Exp., 1885, off Balti- 

 more, 30 fms., small valves (Chaster, '98). 



iv. Generally distributed. Yar. lactea. E. I. A. Exp., 1885, mouth 



of Kenmare Eiver, 38-44 fms., small valves (Chaster, '98). 

 V. Generally distributed. 



vi. Killala Bay (Miss A. Warren, '92) : Bundoran (Thompson, '56) : 

 Iniskeen, co. Donegal (Mrs. Tatlow, '99) : iN'arin Strand, co. 

 Donegal (G. P. Parran) : Mulroy Bay, valves (Praeger, '94). 

 Bistrihution. — Pinmark to Mediterranean. Canaries. Kerguelen 



Sound, " Cballenger." New'Plngiand, N. W. America, Mazatlan, and 



Indian Ocean (Jeffieys)., 



