Stephens — Report on Sponges collected off the Coast of Ireland. 3 



Sycon ciliatum (Fabricius). 



R.I.A. Exp., 1886. Log 41, Crookhaven, 3| fathoms. 



H.D.S. Survey. Blacksod Bay ; Kilkieran Bay ; Clare Island ; 

 Station 23, rock pools, west shore of Killeany Bay; Station 158, Greatman's 

 Bay, Co. Galway ; Station 238, Lough Swilly, 8-12 fathoms. 



Grautia compressa (Fabricius). 

 R.D.S. Survey. Kilkieran Bay ; Clare Island ; Smerwick Harbour ; 

 Station 167, Blacksod Bay, 3-4 fathoms ; Station 238, Lough Swilly, 

 8-12 fathoms. 



Leucandra nivea (Grant). 



K.D.S. Survey. Blacksod Bay, 5 fathoms. 



NON-CALCAREA. 



Order MYXOSPONGIDA. 



Halisarca Dujardini Johnston. 



RD.S. Survey. Station 240, Lough Swilly, 6-8* fathoms. 

 This common species is represented by oue specimen growing on the leg 

 of a crab (Hyas araneus), which is thickly covered with Polyzoa and Hydroids. 



Order TETEAXONIDA. 



Family Theneidae. 



Thenea muricata Bowerbank. 



R.I.A. Exp., 1888. Log 69, 51°1'N., 11°50'W., 750 fathoms. 



The only specimen in the collection is 45 mm. by 38 mm. in diameter. 

 It has one large osculum placed almost centrally on the upper surface of the 

 sponge. 



A large number of specimens of this species have been obtained within 

 recent years by the Irish Fisheries Branch off the south-west coast of 

 Ireland at depths varying between 625 and 982 fathoms (13). 



Family Pachastrellidae. 

 Poecillastra compressa (Bowerbank). 



R.I.A. Exp., 1886. Log 53 (or ? log 20). Oil' the Skelligs, 70-80 fathoms. 



This species is represented by one small fragment. Like Thenea mwricaia, 

 numerous specimens of this species have been dredged within recent years 

 ort' the south-west coast of Ireland at depths of 46S-72S fathoms ;13). These 

 depths are considerably greater than that at which the present specimen was 



