Clare Island Survey — Archiuimelida and Pobjchactu. 47 147 



Pomatoceros triqueter L. 



1894. Pomatoceros triqueter. De Saint-Joseph, p. 353. 



This species is extremely common throughout the whole area, growing on 

 stones, shells, and Lithothamnion. Mature specimens were found in March. 



Habitat. — Blacksod Bay — Common everywhere on the rocky shore, and 

 dredged at all depths. Clew Bay — Common on the shores 

 of Clare Island. Dredged in the bay on 5 occasions, in 

 19-28 fms. Ballynakill Harbour — Common on the shore, 

 and at all depths. 



Distribution — British Isles ; Arctic ; North Atlantic ; Mediterranean. 



Hydroides norvegica Gunnerus, 



1898. Hydroides norvegica. De Saint-Joseph, p. 440. 



This species is very commonly obtained in the dredge, attached to stones 

 and shells. 



Habitat. — Blacksod Bay— Dredged on 3 occasions, in 3-6 fms. Clew 

 Bay — Dredged on 9 occasions, in 9-28 fms. 



Distribution. — British Isles ; Arctic ; Scandinavia ; North Sea ; Baltic ; 

 France ; Mediterranean ; Persian Gulf. 



Filograna implexa Berkeley. 



1894. Filograna implexa + Saliuacina Dysteri. De Saint- Joseph, pp. 335, 340. 



Only a few specimens were dredged in Clew Bay, attached to shells. 

 They were without operculum, thus agreeing with the form described as 

 Salmacina Dysteri Huxley. This species is now considered as identical with 

 Filograna implexa Berkeley. 



Habitat. — Clew Bay — Dredged on 2 occasions, in 5-19 fms. 



Distribution. — British Isles ; Scandinavia ; Faroes ; North Sea ; France ; 

 Mediterranean ; eastern North America. 



Protula tubularia (Montagu). 



1894. Protula, tubularia. De Saint-Joseph, p. 362. 



The specimens of this species obtained in the district fall readily into two 

 groups. One form was only obtained by dredging in the mud of Killary 

 Harbour, where the tubes are very common. These tubes are 100-140 mm. 

 long, more or less straight, and attached to each other in masses, but not to 

 any extraneous object. The contained worms are 60-70 mm. long, not 

 including the branchiae. 



The other form from Ballynakill Harbour, Inishgowla, and Killary 



T2 



