182 TriE ZOOLOGIST. 



N. alderi, Forbes (N. nitida). — Dublin and Donegal, frequent 



A deorbis subcar hiatus, Montagu. — Donegal: Mweelfinn, Sheep- 

 haven. Apparently very rare in the north. My two specimens 

 were not living. It occurs on the Scotch coasts as far as Aber- 

 deenshire (Jeffreys). 



Lamellaria perspicua, Linn. — Portmarnock ; Kinnegar, Lough 

 S willy, and near Dunfanaglry. 



Velutina laevigata. Pennant. — Portmarnock ; Kinnegar, Lough 

 S willy, Dunfanaghy. 



Aporrhais pes-pelecani, Linn. — Frequent on the shores round 

 Dublin ; Kinnegar strand, Lough Swilly, and near Carrigart ; 

 quite scarce in Donegal. 



Cerithium reticulatum, Da Costa. — Bare on the shores about 

 Dublin, but I have found specimens on South Bull, Portrane, and 

 Portmarnock. Very abundant on shores of Lough Swilly, and 

 forms chief ingredient of shell-sand in some places, quite taking 

 the place of Turritella. Common near Horn Head. 



Order Siphonobranchiata. 



Purpurea lapillus, Linn. — Dublin and Donegal, common. 



Buccinum undatum, Linn. — Dublin and Donegal, common. 



Murex erinaceus, Linn. — Dublin, frequent. Donegal, scarce ; 

 but found all round the coast. 



Trophon muricatus, Montagu (Murex). — North Bull, Dublin, 

 not common. 



Fusus antiquus, Linn. — Dublin, common. 



F. gracilis, Da Costa (F. islandicus). — Dublin: South Bull, 

 Portrane, and Portmarnock, not unfrequent. Both these occur 

 thrown ashore alive. I have not observed either Fusus on the 

 Donegal coasts. 



Nassa reticulata, Linn. — Dublin and Donegal, not un- 

 frequent. 



N. incrassata, Strom. — Dublin and Donegal, common. 



Defrancia gracilis, Montagu (Mangelia). — North Bull, 

 Dublin. 



D. leufroyi, Michaud (Mangelia). — Portmarnock, Dublin. 



D. linearis, Montagu (Mangelia). — Mweelfinn, Sheephaven. 



Pleurotoma costata, Donovan (Mangelia). ■ — Dublin : Port- 

 nmrnock strand, opposite Baldoyle. 



P. brachy stoma, Philippi (Mangelia), — Dublin, with the last. 





