18 Proceedings of the Boyal Physical Society. 



All the old localities in the bay were dredged again, several 

 of them, as " the ground opposite the Farm on Holy Isle," and 

 " along the shore from King's Cross Point towards Lamlash," 

 repeatedly ; the latter, at from 10 to 15 fathoms, proving very 

 rich in ISTudibranchs and Ascidians. 



The muddy and sandy area in the centre of the bay and 

 close to the village was also tried again, but with very little 

 result. 



The large Laminaria fronds growing on the buoy at the 

 south entrance, and on the wreck off the west side of Holy 

 Isle, were found valuable localities for Zoophytes, Polyzoa, 

 and the smaller ISTudibranchs, such as Eolis despecta, Doto 

 coronata, and others. 



Nearly all the species named in my former lists were taken 

 again this year, many of them in greater number and in new 

 localities. 



I have not yet been able to examine the Annelides and 

 Crustacea. As I see no immediate prospect of having time 

 to undertake this work, I consider it better to give now the 

 following lists of the additional species found this year, in 

 those groups which I have already gone over, than to delay 

 them till I have time to overhaul the rest. In my former 

 paper there was no list of the Ascidians, as I wished to 

 examine the specimens more carefully, and had not then had 

 time. A considerable number of additional species have been 

 added to the collection this year, including several new to 

 science. As this group is being gone into in more detail than 

 any of the others, the report on it is reserved for a separate 

 paper. 



During this summer I gave a good deal of attention to the 

 Nudibranchiate MoUusca, and was rewarded by the discovery 

 of several rare and interesting species, one at least of which 

 is new to science. 



For the list of Foraminifera I am indebted to Mr Frederick 

 Pearcey. He has kindly examined for me specimens of the 

 sand and mud from the bottom, the sediment in my bottles, 

 some stones, dead shells, zoophytes, etc., and has picked out 

 and identified the Foraminifera. I only regret I did not 

 bring him home more material. 



