530 Froceedings of the Royal Irish Academy. 



Onola striata (Adams). [Rissoa striata, Jeffreys, B. C.) 

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



Generally distributed round the coast in the littoral, laminarian, 

 and coralline zones, and very common. 



Var. aculeus, Gould (= arctica, Loven). K. I. A. Exp., 1885, 

 Berehaven (Chaster, '98) : Kenmare River (Praeger, '99). 



Bistrilution. — Arctic seas to Madeira. Canaries. ? Mediterranean. 

 Greenland. IS". E. America. IST. E. Asia. 



Ceratia proxima (Alder). {Rissoa proxima, Jeffreys, B. C.) 

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



i. Magilligan (Thompson, '56) : off Ballycastle, dead (Chaster, '97a) : 



Turbot Bank, dead, scarce (Hyndman, '58). 

 ii. Portmarnock (Jeffreys, f. Forbes & Hanley, '53 ; Thompson, '56; 



Adams, '78; Marshall, '99) : Dublin (Jeffreys, '67). 

 iii. Cork (Wright & Carroll, '52 ; Jeffreys, '67) : E. I. A. Exp., 1885, 



off Galley Head, 54 fms., and off Baltimore, GO fms. (Chaster, 



'98). 

 iv. Bantry Bay (Thompson, '56 ; Jeffreys, '67 ; Dublin Mus.) : "Por- 

 cupine" Exp., 1869, 808 fms. (Jeffi'eys, '84): R. I. A. Exp., 



1885, 1886, 3^40 fms. (Chaster, '98). 

 V, Miltown Malbay (Harvey, f. Thompson, '56) : "Porcupine" Exp., 



1869, 183 fms. (Jeffreys, '84) : off Connemara (Dodd and Mel- 



lors, f. Marshall, '90). 

 vi. Enniscrone, rare (Miss A. Warren, '92) : Bundoran (Mrs. Hancock^ 



f. Thompson, '56). 

 Distribution. — Loffoden I. to Mediterranean. 



JSyala vitrea (Montagu). {Eissoa vitrea, Jeffreys, B. C.) 



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



i. Turbot Bank, dead (Waller, f. Hyndman, '59). 

 ii. Portmarnock, rare (Brown, '18) : Dublin Bay (Turton, '19 j 

 Kinahan, '61 ; Jeffreys, '67) : Dalkey (Waller Coll. in Dublin 

 Mus.) 

 iii. South of Ireland (Leach, '52 ; Jeffreys, '67) : Cork Harbour, dead 

 (Wright & Carroll, '52) : B. I. A. Exp., 1885, 1886, off 

 S. coast of Cork, 30-52|- fms. (Swanston, '86, Chaster, '98, 

 A.E.K). 



