Nichols — A List of the Marine Moihtsca of Ireland. 535 



Adeorhis imperspicuus, Monterosato. 



i., . . iv., v., . 



i. 0&. Rathlin Island, 17 fms., one dead specimen (Chaster, '97). 

 iy. E. I. A. Exp., 1885, mouth of Kenmare River, 38-44 fms. (Chaster,. 



'98). 

 V. Roundstone (Chaster, '95). 



Distribution. — British Isles. Mediterranean. 



Adeorbis unisulcatus, Chaster. 



i., . . . v., . 



i. Off Rathlin Island, 17 fms., two dead specimens (Chaster, '97). 

 V. Roundstone (Chaster, '97). 



Distribution. — British Isles. Tangier. 



Family. — Ceeithiid^. 

 Newtoniella metula (Loven). {Ceritliium metula, Jeffreys, B, C.) 



i. Turbot Bank, dredged sand (Hyndman, '60) ; probably fossil. 

 Distribution. — Finmark to Portugal. ? Mediterranean. 



Bittium reticulatum (Da Costa). ( Ceritliium reticulatum, Jeffreys, B. C.) 



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



Generally distributed, and very common. 



Distribution. — Loffoden I. to Mediterranean. Azores. Madeira. 

 Morocco. Canaries. 



Trif oris perversa {hitmo). {Cerithium perversum, Jeffreys, B.C.) 



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



i. Off Bally castle, dead (Chaster, '97a) : mouth of Belfast Lough 

 (Hyndman, f. Thompson, '56) : off Black Head, 25 fms. 

 (Hyndman, '59) : Turbot Bank, dead (Hyndman, '58, '59) : 

 off entrance to Strangford Lough, 12-15 fms., dead, very rare 

 (Dickie, '58). 



ii. Portmarnock (Adams, '78) : Dublin Bay (Waller, f. Kinahan, 

 '61). 



iii. Ardmore (Mrs. Mackesy, f. Thompson, '56) : Cork Harbour, a few 

 perfect specimens (Wright & Carroll, '52) : R.I.A. Exp., 1885, 

 1886, Glandore Harbour, 4 fms., and off S. coast of Cork, 30- 

 55i fms. (Swanston, '86, Chaster, '98, A. R. N.). 



