INTRODUCTION. 



The present volume, like those already issued, consists of 

 reprints of the Annual Reports (from the ninth to the 

 thirteenth inclusive) on the L.M.B.C. work at Port Erin 

 and elsewhere, and of such papers communicated to the 

 Biological Society of Liverpool as deal with the marine 

 biology of the neighbourhood. It includes four papers 

 on Copepoda by Mr. Isaac Thompson and Mr. Andrew 

 Scott, one on Hydromedusa^ by Mr. E. T. Browne, on 

 Turbellaria by Mr. H. L. Jameson, on Actinia by Mr. 

 Clubb, and a note on an abnormal Echinus by Mr. 

 ( 'had wick. 



We have been permitted to reprint in this volume tin- 

 long list of the marine fauna and flora of the Irish Sea 

 which was prepared by a Committee of the British 

 Association for the Liverpool meeting in 189b.* This list 

 brought together and summed up the results of all the 

 previous marine biological work in the district ; and more- 

 over, as references an- given after each species to the 

 report or paper in which the occurrence of that species was 

 first recorded, this "B.A. list forms a useful classified 

 index to the faunistic work of the L.M.B.C. up to the end 

 of 1890. A few mistakes and omissions which were dis- 

 covered soon after the list was pi inted will be found noted 

 in the Tenth Annual Report, at p. 102. 



A somewhat longer interval than usual has been allowed 

 to elapse before the issue of this volume. That is mainly 

 in consequence of the energies of some of the Committee 

 having- been hugely diverted from faunistic work during 

 the last couple of yea is into a new channel, which has 



* Sec B.A. Report tor 1896, p. LIT. 



