Nichols — A List of the Marine MoUusca of Ireland. 533 



vi. Xillala Bay, rare (Miss A. Warren, '92) : Mayo and Sligo (Mar- 

 shall, '99) : Bundoran (Jeffreys, '67 ; Belfast Mns., f . Praeger, 

 '89): Tory I., among sea-weed (Hyndman, f, Thompson, '56). 

 Distribution. — JS'orway. England, ? Scotland, Wales, and Ireland 



to Mediterranean. Madeira. Canaries. C. Yerd I. 



Family. — Skeneid^. 



STcenea planorlis (Fabricius). 



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



i. Generally distributed and abundant. Var. Tiyalina, Jeffreys. Port- 

 rush (Marshall, '99). Vai\ trochiformis, Jeffreys. Larne Lough 



(Hyndman, '60; Jeffreys, '67). 

 ii. Portmarnock (Warren Coll. in Dublin Mus.) : Dublin Bay (Kina- 



han, '61 ; WaUer CoU. in Dublin Mus.) : Bullock, Dalkey I., 



and Grreystones (Adams, '78). 

 iii. Youghal (Ball, f. Thompson ms.) : B. I. A. Exp., 1885, Glandore 



Harbour, 4 fms., and off Baltimore, 30 fms. (Chaster, '98). 

 iv. Bantry Bay (Turton, '19) : Dingle Bay, 54 fms. (Adams, f. More, 



'70) : B. I. A. Exp., 1885, 1886, shallow water to 40 fms. 



(Chaster, '98) : Kenmare Biver (Praeger, '99). 

 V. Miltown Malbay (Harvey, f. Thompson ms.) : Roundstone (Alcock, 



'65 ; Standen, '95) : Achill I. (Mrs. Tatlow & Praeger, '98). 

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



Thompson, '56) : IS'arin Strand, co. Donegal (G. P. 



Farran). 

 Distrihution. — Arctic seas to Mediterranean and Madeira in the 

 eastern hemisphere, and to Florida in the western hemisphere. 

 W. Am erica (Dall). 



Retrotortina fuscata, Chaster. 



. . iii., . . . 



iii. E,. 1. A. Exp., 1886, Lough Hyne, a single specimen (Chaster, '98). 

 Distribution. — S. Ireland. Tangier. 



Family." — Jeffreyshd^. 



Jeffrey sia diapliana (Alder). 



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



i. Groomsport (a specimen in Waller Coll. in Dublin Mus.) 

 ii. Portmarnock, and between tide-marks Dalkey Island (Alder, f. 

 Thompson, '56, sub Rissoa alhella, Alder). 



