of the North of Ireland. 103 



ORDER PLEUROBRANOHIATA. 



Cylichna acuminata, Bruguiere. 



Mr. "Waller obtained a single dead shell of this species on the Turbot Bank, 

 and Hyndman another. These are recorded in Hyndman's Reports, under 

 the name Ovula acuminata. 

 Cylichna umbilicata, Montagu. 



Very rare ; dead shells in Turbot Bank sand — Hyndman. 



Cylichna cylindracea, Pennant. 



"Generally distributed" — Thompson (sub Bulla cylindracea). Dredged, 

 in a dead state, on the Turbot Bank, and off Bally galley Head, by Hyndman, 

 and in Castle Ward Bay, Strangford Lough, by Dickie. Bundoran— Belf . 

 Mus. Coll. 

 [Cylichna striata (Bulla striata, Brown). 



' ' The late Mr. Thompson of Belfast erroneously noticed this arctic species 

 as found at Bangor, Co. Down, by Mr. Hyndman. It inhabits the eastern 

 coasts of North America, Greenland, and Finmark" — Jeffreys.] 



Utriculus mammillatus, Philippi. 



Turbot Bank, dead, Mr. Waller — Hyndman (Cylichna mammillata). 



Utriculus truncatulus, Bruguiere. 



"Generally distributed" — Thompson (Bulla truncata). Hyndman occa- 

 sionally dredged dead shells on the Turbot Bank (Cylichna truncata), but 

 does not record having taken it elsewhere. Magilligan — Belf. Mus. Coll. 

 Twin Islands in Belfast Harbour — Mr. Swauston. 



Utriculus obtusus, Montagu. 



" Generally distributed " — Thompson (Bulla obtusa). Hyndman notes it 

 (sub Cylichna obtusa) from the Turbot Bank several times, and from off Bally- 

 galley Head, in a dead state. Dead shells dredged in Strangford Lough — 

 Dickie, and R.L1.P. It frequents muddy estuaries chiefly. 



var. Xiajonkaireana. " From the Turbot Bank, dead; determined by Mr. 

 Jeffreys, in Mr. Hyndman's cabinet"— Hyndman, 1859 Report (sub Cylichna 

 Lajonkaireana) . 



Utriculus hyalinus, Turton. 



"Obtained in shell sand collected at Bundoran by Mrs. Hancock" — 

 Thompson (sub Bulla hyalina). " Dead, in 80 fathoms, off the Maidens " — 

 Hyndman (sub Amphisphyra hyalina). 

 Acera bullata, Muller. 



Generally distributed — Thompson (sub Bulla Altera). It abounds on the 

 Zostera banks of Strangford, Belfast, and Larne Loughs, and in Lough 

 Foyle. Hyndman says he has sometimes seen it swimming in the channel 

 leading to the Quays at Belfast, giving out a purple liquid when touched. 



