MARINE BIOLOGICAL STATION ON PUFFIN ISLAND. 21 



alveolata, Littorina littorea, Doris pilosa, Doris proxima, 

 Chiton ciiiereus, and numerous very fine specimens of 

 Bugula turhinata. 



During a considerable part of April, Mr. Harvey Gibson, 

 Dr. Hanitsch and Mr. F. Villy worked at the station. Mr. 

 Gibson confined his attention to the Rhodophyceae, and 

 he informs me that since his last report, published in the 

 ''Fauna," vol. ii., he has found and identified seventeen 

 species of Algae, mainly parasitic forms, not previously 

 known in the district. Dr. Hanitsch has continued his 

 researches on the Sponges during the year, and reports 

 six species additional to those recorded in the "Fauna." 

 Of these three are new to science and will be figured and 

 described in detail under the names, Axinella mammillata, 

 n. sp., Leiicaltis impressa, n. sp., and Halisarca rubra, 

 n. sp., in the next report on Sponges by Dr. Hanitsch. 

 The last species was obtained by dredging in deep water 

 during the "Spindrift" expedition of July 20th, while the 

 two first were collected on the rocks at Puffin Island in 

 April. 



"Hy^na" Expedition. 



The Salvage Association have again this year afforded 

 us the opportunity of making some investigations which 

 could certainly not have been carried on without the use 

 of -the s.s. "Hyaena." The old gunboat left the Mersey 

 on Thursday morning, the 18th of April, on her fifth 

 scientific cruise, and was absent five days. The proposed 

 course was to cross to Port Erin, at the south end of the 

 Isle of Man, and then dredge southwards to Holyhead, 

 through the deepest water to be found in this district ; 

 then to work along the coast of Anglesey to Puffin Island, 

 and from that back to Liverpool. Besides the ordinary 

 dredging and tow-netting operations, it was hoped that 



