223 



Sub Class 1— CALCAREA. Bowerbank. 



^ Grantia compressa (Fab.) 



Artynes compressa, Gray. Proc. Zool. Soc. Lond. 1867, p. 555. 

 On stems of algae, all round the coast. 



Gr. ciliata (Fab.) 



Parasitical on Fuci, all round the coast. Of large size in the tidal 

 estuary of the Liffey. 



Leucosolenia botryoides (Ellis and Solander.) 

 Grantia lieberhuhni Sdt. Die Spongien, p. 17, and 2nd Supp., p. 8. 

 Parasitical on Fuci and Hydrozoa, all around the coast. 



^L. lacunosa (Bean.) 

 Nardosa lacunosa Sdt. Die Spongien, 2nd Supp., p. 8. 

 Belfast Lough. G. Hyndman, 1858. 



^L. coriacea (Mont.) 

 Malahide. Dublin Bay. A. H. Hassall. Killough. W. Thompson 



v Leuconia nivea (Flem.) 

 Grantia solida Sdt. Die Spongien, p. 18, 2nd Supp., p. 8. 

 West coast of Ireland. M'Calla. 



t/ L. fistulosa (Johnst.) 

 Portaferry. "W. T. Fide Dr. Johnston. 



Sub Class 2 SILICEA. Bowerbank. 



Pachymatisma johnstonia Bowerbank. 



Halichondria johnstonia (Bowerbank). 1841. 

 Pachymatisma johnstonia Bowerbank. 1842. 

 Amphiirema M' Callii Scouler M. S. 1846.* 



This sponge is mentioned by Dr. Bowerbank as found on the south 

 coast of Ireland. Specimens marked Amphitrema M' Callii are in the 

 Eoyal Dublin Society's Museum, from Connemara, and are, without 

 doubt, part of the collection made by Mr. M'Calla in Bertraghboy Bay 

 for Dr. Scouler. Specimens are often found incrusting rocks at low 

 water mark. At present I only know of its occurrence on the western 

 coast of Ireland. Eoundstone. 



* Two large masses of sponge are in the Royal Dublin Society's collection, marked 

 Amphitrema M i Callii. This name was then changed to that of Raphyrus Griffithsii. 

 One of these is certainly Pachymatisma Johnstonia, Bk., which name must stand, as 

 Professor Scouler never published his name for this species. The other specimen is pro- 

 bably Papillina Griffithsii (Bk.). 



