140 THE ZOOLOGIST. 



T. granulatus, Born. — Donegal : Kinnegar, Lough Swilly, fide 

 Mr. T. Batt, of Rathmullan, who showed me specimens. 

 T. zizyvhinus, Linn. — Dublin and Donegal, frequent. 



Phasianella pulla, Linn. — Dublin and Donegal, frequent. 



Lacuna divaricata, Fabr. (L. vincta, F. & H.). — Dublin and 

 Donegal, frequent. 



L. puteolus, Turton. — Dublin : Ware Hole, Howth. Donegal : 

 Mweelfinn, Sheephaven, and near Dunfanaghy. 



L. pallidula, Da Costa. — Donegal : near Dunfanaghy and at 

 Mweelfinn, Sheephaven. 



Littorina obtusata, Linn. (L. littoralis). — Dublin and Donegal, 

 common. 



L. rudis, Mahon. — Dublin and Donegal, common. 



L. litorea, Linn. — Dublin and Donegal, abundant. 



L. neritoideSy Linn. — Dublin, frequent. 



Rissoa parva, Da Costa. — Dublin and Donegal, abundant. 

 Var. interrupta, common. 



R. membranacea, Adams (R. labiosa). — Dublin and Donegal, 

 frequent. 



R. striata, Adams. — Dublin: Portmarnock, common. Done- 

 gal : Inch, Lough Swilly, frequent. I have gathered other 

 Rissoae at Inch Island, Lough Swilly, and at Portmarnock, but 

 have not had them identified to my satisfaction. Inch, I should 

 say, is an excellent hunting ground. 



Hydrobia ulvce, Pennant.— Dublin and Donegal, common. 



Barleeia rubra, Montagu. — Dublin, one specimen at South 

 Bull. Donegal, found at Bundoran by Jeffreys. 



Homalogyra rota, Forbes & Hanley. — Dublin : Howth (Kosh). 

 It has been taken in Donegal by Mr. Warren and Mr. Barlee 

 (Forbes & Hanley). 



Coecum trachea, Montagu. — Dublin : Portmarnock. 



Turritella terebra, Linn.— Dublin, very common ; and up the 

 east coast to Derry, where it is particularly abundant at Lough 

 Foyle. In Donegal it is quite scarce ; near Melmore (Mulroy) 

 I have gathered old specimens. Its distribution, with regard to 

 Donegal, is similar to that of Cyprina islandica. Either Lough 

 Foyle, or the northernmost headland, Malin Head, or the two 

 combined, forms an important biological boundary. 



Scalaria communis, Lamarck. — Dublin : South Bull and 

 Portmarnock, scarce. Derry: Magilligan (Miss H. Galway). 



