INTRODUCTION. 11 



spiritus, Paguriis bernhardtis, Galathea intermedia^ 

 Portunus arcuatus. 

 MoLLUSCA. — Natica catena, Tellina tenuis, Sepiola 

 atlantlca. 



Surface organisms seemed to be almost confined on this 

 occasion to Noctiliica miliaris, a few Copepoda, and vast 

 quantities of a small spherical gelatinous Alga. This last 

 organism was met with again, later on in the summer, by 

 Mr. Thompson, at Penmaenmawr.* 



Probably the region at the mouth of the Dee, lying 

 between Hilbre Island and the Point of Ayr, will prove 

 a very good dredging locality, when carefully investigated 

 under more favourable circumstances. 



It was thought desirable by the Liverpool Marine Bio- 

 logy Committee that the marine fauna at the extreme 

 limits of the Liverpool Bay district f should be investigated, 

 and collections made at these places, so that comparisons 

 might be instituted with the faunas of Hilbre Island and of 

 the immediate neighbourhood of the Mersey. Consequently 

 one of the members of the Committee conducted dredging 

 and tow-netting observations for several weeks in July, in 

 the neighbourhood of Penmaenmawr, and another member 

 spent five weeks in July and August in continuous dredging 

 and collecting along the southern ^nd of the Isle of Man. 

 For a detailed account of these observations, reference may be 

 made to the separate Keports upon these outlying localities.! 



Several Ascidians (Ascidia virginea, Ascidia scabra, Styela- 

 grossularia and Botrylloides ruhrum), which had not been pre- 

 viously obtained in the district, were found at Penmaenmawr. 



* See Report upon Fauna of Penmaenmawr, p. 315. 



t The western limits are the Isle of Man to the north and Anglesea to 

 the south. 



\ See Report on Fauna of Penmaenmawr, by I. C. Thompson, F.K.M S., 

 p. 315 ; and Report on Fauna of Isle of Man, by Prof. Herdman, D.Sc, 

 p. 318. 



