120 BRITISH spongiadj:. 



13, ISODIGTTA LUTEOSA, £oW., Ill, 288; PI. LXXXV, 



figs. 5—7. 



14. ISODICTTA ANOMALA, BoW., II, 293 ; III, PI. L, fig&. 



1—4. 



1868 Fieulina anomala, Parfitt. Ti-ans. Devon. Assoc. Sci. 

 Liter, and Art, p, 13 (in separate copy). 



15. ISODICTTA PARASITICA, BOVJ., II, 287; III, PI. XLIX, 



figs. 6—8. 



16. IsoDicTTA Pbachii, Boiv., II, 276 ; in, PI. XL VIII, 



figs. 6—8. 



Habitat. — ^Magnificently large examples dredged in 

 company witli the large specimens of Isodictya in- 

 distincta just described, BapModesma floreum, Ophli- 

 taspongia seriata (unusually fine), Dysidea coriacea, 

 and many other sponges a little inside the Lighthouse 

 of Westport Bay, Co. Mayo. Among Dr. Bower- 

 bank's notes are the following on these specimens, 

 which were submitted by the editor to him : 



" This sponge is very difEerent in size and form 

 from the type-specimen of the species, but it agrees so 

 perfectly with it in its organic structures that it 

 cannot possibly be referred to any other species of 

 Isodictya, nor established as a distinct species. The 

 specimen sent to me for examination by the Rev. 

 A. M. Norman was dredged at Westport Bay, Co. 

 Mayo, Ireland, in from five to six fathoms. It was 

 four and a quarter inches in length, two and a half 



