546 BEPOBT — 1893. 



Investigations made at the Laboratory of the Marine Biological 

 Association at Plymouth. — Report of the .Committee, consist- 

 ing of Professor E. Kat Lankester (Chairman), Professor M. 

 Foster, Professor S. H. Vines, and Mr. S. F. Harmer (Secretary). 



I. The Turhellaria of Plymouth Sound. By F. W. Gamble, B.Sc. 



II. The Larva of Decapod Crustacea. By EDGAR *J. Allen, B.Sc. 



III. Notes on Horn Fish find Food. By Geegg Wilson, M.A., B.Sc. 



The object specially mentioned by the terms of the grant of 30Z. 

 placed at the disposal of the Committee for the present year has been 

 attained by reappointing Mr. Gamble to the use of a table to enable him 

 to extend his observations on British Turbellaria. Mr. Allen has been 

 reappointed to allow him to continue his researches on the development 

 of Decapod Crustacea ; and Miss F. Buchanan, whose observations made 

 in 1891 as the result of a previous appointment by the Committee are re- 

 corded in the Report for 1892 (p. 356), has been reappointed with the 

 intention of studying the development of Magelona. 

 The Committee have thus appointed — 



Mr. F. W. Gamble B.Sc, Owens College, Manchester, for one 



month, from August 8, 1893. 

 Mr. Edgar J. Allen, B.Sc, University College, London, for two 



months, from June 1, 1893. 

 Miss F. Buchanan, B.Sc, University College, London, for one 



month, from September 1, 1893. 



The Committee have thus expended 15^. (taking into account the 

 month which belongs to the Association free of charge), leaving an un- 

 expended balance of 151., which they trust will be placed at their disposal 

 to allow them to carry oq their work next year. 



They are naturally unable to furnish any account of results arrived at 

 during the present year, but they are happy to be in a position to pre- 

 sent the following reports on the work of the preceding year. These 

 reports, taken in conjunction with the others which have been published 

 in previous years, will serve to show that important results have been 

 arrived at with the assistance of the grants made to this Committee. 



I. Report on the Occupation of the Table. 

 The Turhellaria of Plymouth Sound. By Mr. F. W. Gamble, B.Sc. 



Daring August and September of 1892 I occupied the Association's 

 table, and was thus enabled to investigate the Turbellaria of Plymouth 

 Sound and of its neighbourhood. Since, in contrast to the amount of 

 research devoted to many of the other groups of animals composing our 

 fauna, little attention has been hitherto bestowed on the Turbellaria, the 

 results of my work show a marked increase in the number of species of 

 this group occurring at Plymouth as compared with former records. 

 More interesting than the numerical increase of the fauna are the re- 

 lations of these newly-added forms to those inhabiting the Mediterranean 

 and Adriatic seas on the one hand and the Scandinavian on the other. 



