MAKINE BIOLOGICAL STATION ON PUFFIN ISLAND. 25 



quantity of surface organisms, the greater number being 

 Copepoda, and these chiefly Temora longicornis, Centropages 

 hamatus, Pseudocalanus elongatus and C alarms finmarchicus ; 

 with these were a quantity of Peltidium depressum, a littoral 

 species usually found attached to L tmiutria, but apparently 

 swimming on the surface during the early morning hours . 

 A large number of Cumacea (3 species) were also in the 

 tow-net and several Schizopoda, Amphipoda (5 species) 

 and some Sagitta. The net, although kept extended near 

 the surface by the strong tide, probably sank at the slack 

 tide near to the bottom so as to have taken Cumacea and 

 such a feebly-swimming Amphipod as Dullchia porrecta. 



Mr. Gibson occupied himself with the Algae, examining 

 especially the Beacon rocks, the Sponge caves and shelving 

 rocks on the north side of the Island, the caves at Dinmor 

 Point and the D. B. buoy, where he was fortunate enough 

 to find, along with many common forms, over 20 of the 

 rarer species, including Lyngbya gracilis, Dermocarpa prasina, 

 Entocladia icittroeki, Epicladia fiustrce, P ring she imia scutata, 

 Calliblepharis jubata, and Ahnfeltia plicata, new to our dis- 

 trict, and one, Bhodochorton seiriolanum, new to science. 

 Mr. Gibson again visited the Island towards the end of 

 May along with Mr. Ewart, and made further collections 

 of Algse from the rocks, chiefly of the North side and N.E. 

 Spit, including Callithamnion corymbosum, Ceramium acan- 

 thonotum, Griffith sia setacea, Ralfsia verrucosa, Hildenbrandtia 

 rosea, and Poly ides rotundus. 



Later on (June 21st), an important party of Botanists, 

 consisting of Mr. George Murray, F.L.S., of the British 

 Museum; Mr. L. N. Boodle, Demonstrator of Botany at 

 the Boyal College of Science, London ; Mr. E. A. Batters, 

 F.L.S. ; and Mr. Harvey Gibson, visited the station with the 

 object of prosecuting further researches on the Algal flora 

 of the Island. As this was the first occasion on which the 





