MARINE BIOLOGICAL STATION ON PUFFIN ISLAND. 47 



Mr. Thompson has found several of the rarer forms, e.g., 

 Euterpe gracilis, Pontella icollastoni, and Parapontella brevi- 

 cornis. 



Mr. A. Chopin, of Manchester, spent a week at the end 

 of August in collecting Invertebrata round the southern 

 end of the Isle of Man, and was singularly successful in 

 some groups. He has kindly submitted all his lists, and 

 some of the specimens, to me, and I note that he ob- 

 tained : — 



Sponges, eight species. 



Hydroida, twenty-seven species, including Syncoryne 

 eximia (dredged off Spanish Head), and Lafuea fruticosa 

 (on Sertularia abietina), not previously found in our district. 

 Some members of the Manchester Microscopical Society 

 also obtained in June, Corymorpha nutans, (near Shagg 

 Rock, 12 fathoms), and Coryne pnsilla (Flesh wick Bay), 

 both rare species. 



Actiniaria, eighteen species and recognised varieties, 

 including Sagartia nivea and its variety immaculata, not 

 previously recorded. 



Echinodermata, eight species. 



Poltch^ta, five species. 



Eotifeea, Synclmta baltica, Ehr., not previously recor- 

 ded. 



Arachnida, Halacarus rhodostigma, Gosse (always on 

 Boicerbankia imbricata), not previously recorded. 



Polyzoa, twenty species. 



Crustacea, twenty species, including Portimus corrnga- 

 tus, not previously recorded. 



Mollusca, thirteen species, including Chiton discrepans, 

 new to the district. 



Mr. Chopin collected at Hilbre Island, in September, 

 the following Sea-Anemones : — Sagartia viduata, varieties 



