MAEINE BIOLOGICAL STATION AT PORT ERIN. 



37 



At the end of October another rope, which had been 

 sunk in the bay since June with a bag of oysters, was 

 hauled up, and the upper 4 or 5 feet, much covered with 

 algoe, was removed for examination in the laboratory. It 

 was found to have the following organisms adhering : — 

 Alg.e (identified by Prof. Harvey Gibson) : 



Geramium rubrum, C. Ag. 

 C. strictum, Harv. 

 C. deslongcliampsii, Chauv. 

 Chantransia daviesii, Thur. 

 G. virgatuJa, Thur. 

 Desmarestia aculeata, Lamx. 

 Polijsiplwnia urceolata, Grev. 



Zoophytes (identified by Miss L. E. Thornely) 



P. nigrescens, Grev. 

 P. elongata, Grev. 

 Dictyota dichotoma, Lamx. 

 Sphacelaria cirrhosa, C. Ag. 

 Enteromorpha clathrata, J.Ag. 

 Monostroma witrockii, Born. 

 Colonies of GompJionema. 



Obelia geniculata 



0. longissima 



Cytia johnstoni 

 Polyzoa (Miss Thornely) : 



Membranipora pilosa 



Eucratea chelata 

 Tunicata (Miss J. H. Willmer) : 



Diplosoma gelatinosum 

 Crustacea (identified by Mr. A. 0. Walker) : 



Hippolyte varians Gammarus locusta 



Idotea marina Lilljeborgia hinahani 



Hyale nilssonii 



Apherusa bispinosa 



Dexamine spinosa 



Bongainvillea muscus 

 Opercular ella lacerata 



Scrupocellaria repta ns 

 Scliizoporella hya Una 



Ascidiella virginea 



Amphithoe rubricata 

 Podocerus falca tus 

 Gaprella acanthi/era. 



The Drift Bottles and Surface Currents. 



In last year's report the scheme for the distribution of 

 drift bottles over the Irish Sea, for the purpose in helping 

 to determine the set of the chief currents, tidal or other- 

 wise, which might influence the movements of fish food 



