MARINE BIOLOGICAL STATION AT PORT ERIN. 49 



volume of the series and contains about 475 pages and 

 53 plates, several of which are coloured. In addition to 

 the reports and papers which had been already announced 

 as forthcoming in this volume, Vol. IV. contains a note 

 upon the yellow variety of Sarco diet yon by Prof. Herdman, 

 a paper on the structure of the cerata of: Dcndronotus by 

 Mr. J. A. Clubb, a revision of the Amphipoda of the 

 L. M. B. C. District by Mr. Walker, and a supplementary 

 report on the Port Erin Nemertines by Mr. Beaumont. 



It ought to be noticed that although the primary 

 objects of the Committee were originally faunistic and 

 speciographic, yet observations on habits and life-histories, 

 and bionomics in general, have not been neglected ; and 

 now some of our papers in this Vol. IV., such as Mr. 

 Chadwick's on the Vascular Systems of the Starfishes, and 

 Mr. Clubb's on the Cerata of Nudibranchs, are coming to 

 deal with purely structural and morphological questions. 



The other Reports in this volume deal, some of them — 

 such as Mr. Gamble's on Tmbellaria, Mr. Beaumont's on 

 Nemertea, and Mr. Browne's on MedusaB — with fresh 

 groups of animals which had not been adequately discussed 

 in the previous volumes ; while others, such as Mr. 

 Thompson's and Mr. Walker's reports, are welcome 

 revisions of these authors' own previous work on the 

 Crustacea. Dr. Hanitsch has furnished us with a paper 

 on the Classification and Nomenclature of British Sponges, 

 which it may be said does not come strictly within the 

 scope of the L.M.B.C. Reports. Still the subject matter 

 is of such importance to anyone working systematically at 

 our sponge fauna, and the treatment seems so well adapted 

 to render the lists an indispensable working addition to 

 Bowerbank's Monograph, that I had no hesitation in 

 asking Dr. Hanitsch to allow the paper to be included in 

 our series of reports upon the Fauna of Liverpool Bay. 



