Nichols — A List of the Marine MoUusca of Ireland. 609 



\_Limopsis aiirita (Brocchi).] 



. . . iv., v., . 



iv. "Porcupine" Exp., 1869, 370-722 fms. (Jeffreys, '79) : E. I. A. 



Exp., 1888, 345 fms., a small live specimen (Chaster, '98). 

 V. West of Ireland, 340 fms., two valves (King, '63, Jeffreys, '63) : 

 "Porcupine" Exp., 1869, 173-208 fms. (Jeffreys, '79). 

 Distribution. — Both, sides of IN'orth Atlantic. Mediterranean. 

 Deep water. 



\_Limo23sis cridata, Jeffreys.] 



. . . iv., . . 



iv. " Porcupine " Exp., 1869, 808 fms. (Jeffreys, '79): "Flying 

 Eox" Exp., 1889, 1000 fms. (Smith '89)." 

 Distrihution. — Both sides of North Atlantic. Deep water. 



[_Limoj)sis minuta (Philippi). (Z. lorealis, Jeffreys, B.C.)] 

 . . . iv., v., . 

 iv. "Porcupine" Exp., 1869, 370-808 fms. (Jeffreys, '79). 

 T. "Porcupine" Exp., 1869, 422 fms. (Jeffreys, '79). 



Bistrihution. — Both sides of North Atlantic, Mediterranean. 

 Cape of Good Hope (Jeffreys). 



Family. — MrTiLiDiE. 



Mytilus edulis, Linne. 



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



Universally distributed round the coast and gregarious ; usually 

 in the littoral zone. 



Var. incurvata. Pennant. Very common on the rocky coasts. Yar. 

 pellucida, Pennant. Belfast Lough (Thompson, '56) : Cultra 

 (Stewart, f. Praeger, '89): Dublin coast (Brown, '18; &c.) : 

 Bray (Adams, '78). 



Distrihction. — Almost cosmopolitan. 



Modiolus adriaticus (Lamarck). (Mi/tilus adriaticus, Jeffreys, B.C.) 

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

 i. "Porcupine", Exp., 1869, Lough Eoyle, 10 fms. (Jeffreys, '79): 

 ? Turbot Bank, and off the Maidens, 75 fms., dead (Hyndman, 

 '58) : Belfast Lough (Hyndman and Thompson, f. Thompson, 

 '56; living, Hyndman, '58; Praeger, '89): Strangford Lough 

 (Belfast Mus., f. Praeger '89). 



