Royal Physical Society. 237 



reflected from some tissue which I have not been able to de- 

 tect. 



The reproductive organs, which in the Acalephs of some 

 zoophytes are developed before the separation from the parent 

 polypary, have not appeared during the seven or eight days 

 which the Acalephs of Eudendrium pusillum lived in my pos- 

 session. 



Eudendrium Sessile. 



19. This species (figs. 16 and 17) is found growing on shells 

 in deep water in the Firth of Forth, and on rocks at the shore 

 about Granton. The red or white polyp is sessile, or united 

 by a very short ringed stem, on a creeping polypary, and it is 

 inclosed up to the tentacles in a membranous tube, which bends 

 with every movement of the body. The filiform tentacles are 

 from two to eight in number, of equal lengths, and carried in 

 two rows, the upper one elevated, the lower one depressed. 

 The Acaleph buds in this species are sessile, and are produced 

 from the creeping polypary, close to each of the polyps, often 

 in pairs. They differ in no respect of either size or form from 

 the Acalephs of Eudendrium pusillum already described in 

 this paper. 



II. Notice of Dredgings in Lamlasli Bay. By Robert K. 

 Greville, LL.D. i 



Dr Greville gave a sketch of the results of the dredgings carried on 

 in Lamlash Bay last summer, by the Rev. Dr Miles and himself, as a 

 Committee of the British Association, and stated that they would be pub- 

 lished in their Transactions. He laid on the table tabulated lists of ma- 

 rine animals taken in that locality, referring particularly to some of the 

 more interesting species, and believed that locality to be pretty nearly 

 worked out. He mentioned that this last season seemed, from some un- 

 known cause, to have been generally unfavourable to the inquirers in 

 this department of natural history, from the unusual rarity of marine 

 animals. Dr Greville then gave some interesting details of the habits of 

 various marine creatures, including several species of small fishes, as ob- 

 served by him in a large vivarium in Arran, adding, that he believed in 

 this way we would ultimately be enabled to acquire a very complete 

 knowledge of the habits of many most interesting species. 



