642 Proceedings of the Royal Irish Academy. 



iii. Youghal (Ball, f. Forbes & Hanley, '53) : Youghal and Cork 

 (Leach, '52) : E.I. A. Exp., 1886, Glandore Harbour, 4 fms. 

 (Chaster, '98) : off Sherkin I. (A. E. N.). Var. qmdrata, 

 Jeffreys. Cork (Humphreys, f. Jeffreys, '63). 



iv. Generally distributed. Yar. ovata, Jeffreys. Bantry Bay (Jeffreys, 

 '63). 



y. Coast of Clare (Ball, f. Thompson, '56): "Porcupine" Exp., 

 1869, Gal way Bay, 15-20 fms. (Jeffreys, '81) : Birterbuy Bay 

 (Farran and Barlee, f. Forbes & Hanley, '53) : Eoundstone 

 (Alcock, '65) : Clifden and Clew Bays (Thompson, '56). 



■vi. " Porcupine" Exp., 1869, Donegal Bay, 25-40 fms. (Jeffreys, '63) : 

 Killybegs (Mrs. Tatlow, '99) : Mweelfinn, Sheephaven (Hart, 

 '92) : Lough Swilly (Swanston, f. Praeger, '89 ; Hart, '92). 

 Listrihution. — Loffoden I. to Mediterranean. 



Venerupis irus (Linne). 

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



ii. Howth, imbedded in limestone (Turton, '19): east of Ireland 



(Jeffreys, '65). 

 iii. Tramore Bay (Walpole, '52) : Clonea, near Dungarvan (Farran, 



'60) : Youghal (Ball, f. Brown, '44 ; Humphreys, '45) : south 



of Ireland (Jeffreys, '65). 

 iv. Coast of Kerry (Dublin Mus., coll. by A, G. More). 

 V. Coast of Clare (Kinahan in Proc. N.H. S. Dublin, in., 1863,p. 103) : 



Miltown Malbay (Harvey, f. Thompson, '56) : Birterbuy Bay, 



living (Farran, '45) : Eoundstone (D'Arcy W. Thompson) : 



Achill I. (Mrs. Tatlow & Praeger, '98): west of Ireland 



(Jeffreys, '65). 

 vi. Killala Bay, very common (Miss A. "Warren, '92) : Bundoran 



(Thompson Coll. in Belfast Mus., f. Praeger, '89 ; Waller Coll. 



in Dublin Mus.). 

 Bistrihution. — S. England, Wales, and Ireland to Mediterraneau. 

 Madeira. Canaries. 



Family. — Caediid^. 

 'iCardium actdeatum, Linne. 

 . ii., .... 

 ii. Portmarnock and Dublin Bay (Brown, '18, '44). Probably an 

 error. 

 Distribution. — ? Norway. British Isles to Mediterranean. Mogador. 

 Madeira (Watson). 



