MARINE BIOLOGICAL STATION AT PORT ERIN. 35 



found it was sometimes captured in the dark when we 

 had failed to obtain any during the daytime. We also 

 found in these night tow-nettings a few specimens of the 

 closely allied genus Spadella. 



(3) Mr. E. T. Browne, during a considerable stay in 

 September and October, collected and studied the Medusee 

 of the Bay. He took regular tow-nettings, and made 

 careful water-colour drawings of his material. Although 

 the season was not a good one for Medusae, and the hauls 

 were often day after day disappointing, still Mr. Browne 

 obtained some new forms and stages to figure, which will 

 doubtless appear in his forthcoming work on the subject. 



(4) Mr. H. Yates, of Manchester, has done some work 

 on Polychsete worms ; Mr. C. E. Jones, formerly of 

 Liverpool, now moved to the Royal College of Science, 

 South Kensington, studied sea-weeds in June ; and on 

 various visits I have collected and identified Tunicata of 

 various kinds. 



During the couple of weeks that I spent at Port Erin 

 in September, disappointed in the scarcity of " plankton " 

 during the day, and wishing to help Mr. Cole with 

 material for his Memoir on Sagitta — the Arrow-worm — 

 and remembering moreover the tremendous quantities 

 obtained outside the bay in the bottom nets on a former 

 occasion (in January, 1899), I went out in the Shellbend 

 after dark, and took tow-nettings across the mouth 

 of the bay. I did get a few more Sagitta by 

 that method, but no great abundance ; and I also got a 

 few specimens of the curious allied form Spadella. 

 But the most noteworthy result of these night tow- 

 nettings was the greatly increased number of Crustacea 

 obtained. Mr. A. 0. Walker tells me of no less than 

 nineteen different species of higher Crustacea in one of 

 these hauls, several of them being rare forms. It is 



