626 Proceedings of the Royal Irish Academy. 



Montacuta sulstriata (Montagu). 



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



i. Off Ballycastle, dead (Chaster, '97a): " Porciipine " Exp., 1869, 

 ISTorth Channel, 40 fms. (Jeffreys, '81) : entrance to Belfast 

 Lough, living (Thompson, '56 ; Hyndman,'58) : off Strangford 

 Lough, 12-15 fms., living, very rare (Dickie, '58). 



ii. Portmarnock, rare (A. Macalister, f, Adams, '78) : Dublin Bay 

 (Kinahan, '61). 



iii. E.I. A. Exp., 1885, 1886, 1888, off S. coast of Cork, 30-52ifms., 

 valves (Chaster, '98). 



iv. Bantry Bay (Jeffreys, f. Forbes & Hanley, '53; Dublin Mus.) : 

 "Porcupine" Exp., 1869, 370-722 fms. "(Jeffreys, '81): R.I.A. 

 Exp., 1885, 1886, 5-79 fms., valves (Chaster, '98) : "Plying 

 Pox" Exp., 1889, 50-60 fms. (Smith, '89). 



v. Aran I. (Barlee, f. Porbes & Hanley, '53) : " Porcupine " Exp., 

 1869, 85-208 fms. (Jeffreys, '81). 



vi= Enniscrone, valves only (Miss A. Warren, '92). 

 Distrilution. — Pinmark to Mediterranean. 

 Inhabits the ventral spines of various species of Echinoidea, 



Montacuta Mdentata (Montagu). 

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

 i. Off Ballycastle, dead (Chaster, '97a) : Cushendall (Belfast Mus., f. 

 Praeger, '89) : off Black Head, 25 fms. (Hyndman, '59) : 

 Turbot Bank, dead (Hyndman, '59 ; Swanston, f. Praeger, '89) : 

 Bangor (Hyndman and Thompson, f. Thompson, '56). 

 ii. Portmarnock (Porbes & Hanley, '53 ; Walpole, '53a) : Dublin Bay 



(Turton Cat., f. Thompson, '56; Waller, f. Kinahan, '61). 

 iii. About Cork (Turton Cat., f. Thompson, '56) : Cork Harbour 

 (Wright & Carroll, '52; Humphreys, f. Porbes & Hanley, '53): 

 E. L A. Exp., 1885, 1886, 1888, 0-52i fms. (Chaster, '98, 

 A.R. N.). 

 iv. Bantry Bay (Humphreys, f. Porbes & Hanley, '53) : " Porcupine " 

 Exp., 1869, 808 fms. (Jeffreys, '81) : R. I. A. Exp., 1885, 

 1886, 1888, 0-120 fms. (Chaster, '98, A. Ii. N.) : Kenmare 

 Biver (Praeger, '99). Var. trianyidaris. Ii. I. A. Exp., 

 1886, Berehaven, 10-20 fms. (Chaster, '98). 

 V. " Porcupine " Exp., 1869, 165-816 fms. (Jeffreys, '81) : Round- 

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



