227 



Isodictya cinerea (Grant). 



Connemera; (M'Calla), Dublin Bay; (A. H. Hassall) ; Clew Bay (W. 

 Thompson). 



I. peachii (Bowerbank). 

 Gantry Bay ; Rev. A. M. Norman. 



I. sirnulo (Bowerbank). 



Same locality as last. 



I. simulans (Johnston). 



Adocia similans (Gray). Proc. Zool. Soc. Lond. 1867, p. 522. 

 Connemara; (M'Calla), Dublin Bay, A. H. H. I have taken it at Ma- 

 lahide, and probably it will be found all around the coast. 



I. fucorum (Esper). 

 Common in all suitable localities, investing Fuci and Sertulariae. 



I. gracilis (Bowerbank). 

 Larne Lough (Prof. Dickie). 



Spongilla fluviatilis (Pallas). 



JEphydatia fluviatiUs (Gray). Proc. Zool. Soc. Lond. 1867, p. 550. 

 To be found apparently in every suitable locality in Ireland. In Dublin 



very common in the canals, and of too frequent occurrence in the fresh 



water pipes of the city. 



S. lacustris (Fleming). 



Spongilla lacustris (Gray). Proc. Zool. Soc. Lond. 1867, p. 552. 

 Lower Lake of Killarney. Prof. Airman (1848). Lakes in the counties 

 of "Wicklow and Galway not uncommon. 



Desmacidon segagropila (Scouler). 

 Halispongia cegagropila Scouler MS. Johnston, " British Sponges," 



p. 119, Plate XL, Pig. 1. 

 Esperia cegagropila Sdt. Die Spongien 2nd Sup. p. 18. 

 JEgogropila varians (Gray). Proc. Zool. Soc. Lond. 1867, p. 533. 

 Desmacidon cegogropila Bowerbank, " British Sponges," p. 352. 



Dr. Bowerbank, in his " Monograph of the British Spongiadae," ap- 

 pears to have overlooked both the Irish localities for this species, as 

 well as the fact tbat its specific name was given to it by Prof. 

 Scouler. It was first found in Eoundstone Bay by Mr. M'Calla. "W. 

 Thompson records it from Derry. Bertraghboy Bay. 



Papillina suberea Sdt. 

 Raphyrus Grijfithsia Bowerbank, 1864. 

 Halichondria celata, var. a (Johnston). 

 Raphyrus celatus (Gray). Proc. Soc. Lond. 1867, p. 516. 



