Haddon — On the Fauna of Dublin Bay. 523 



XXVII. PEELTMrNAKT RePORT Olf THE FaTJNA OF DtTBLIN Bat. By 



Alfred C. Haddon^, M.A., M.R.I. A., F.Z.S. &g., Professor of 

 Zoology, Royal College of Science, Dublin. 



[Eead, February 23, 1885.] 



In 1881 the Academy gave a grant to Mr. A. G. More and myself to 

 investigate the Marine Fauna of Dublin Bay. Mr. More having been 

 prevented by ill health from taking any active share in the work, the 

 duty of reporting to the Academy has devolved upon me. 



I have pui'posely entitled this communication a "Preliminary Re- 

 port," as I am still investigating the fauna of the Bay as opportunity 

 presents itself ; and since additions are continually being made to our 

 knowledge, I consider it would be a mistake to present a final Report 

 to the Academy until it could be reasonably expected to be fairly 

 exhaustive, but some account of the duty entrusted to me is by this 

 time due to the Academy. 



As a rule, I have confined the following account to an enumeration 

 of those forms which have not previously been recorded as occurring 

 in the Bay or neighbouring coast, or which are otherwise of interest. 

 I have taken the lists compiled for the Dublin Meeting of the British 

 Association in 1878, by Prof. H. W. Mackintosh and others, and the 

 localities recorded in the various monographs,^ as my authorities for the 

 presence or absence of any particular form on our coasts. 



I should like to take this opportunity of thanking the following 

 gentlemen who have assisted me, viz., Mr. T. A- Bewley for a dredg- 

 ing excursion in a steam-launch, in conjunction with Messrs J. Wright 

 of Belfast, and Mr. P. Balkwill, late of Dublin; Dr. W. Wright of 

 Dalkey, for one afternoon in his yacht, and to Mr. G. T. Dixon and 

 others of Dublin, for help in shore-collecting at various times. Mr. 

 A. Gr. More, with characteristic readiness, has always responded to 

 any appeals for advice. The square brackets [ ] include species added 

 since the Report was read. 



Protozoa. — The Foraminifera of this district have already been 

 investigated by Messrs F. Balkwill and J. Wright, and their Report 

 waspublished by the Academy in 1885, {Trans, xxviir., p. 317). I have, 

 therefore, paid no attention to this group, but when examining some 

 Polyzoa, which I had collected in the summer of 1882 at Dalkey 

 Island, in a sheltered spot, between tides, I found several specimens 

 of Haliphysema tumanowtczii, Bowk. This remarkable arenaceous 

 Rhizopod has had a chequered history since its discovery by Bower- 



1 Guide to the City and County of Dublin, 1878. Dublin : Hodges, Foster, & 

 Figgis. (Part ii., Fauna.) 



R. I. A., PROC, SER. II., TOL. IV. SCIENCE. 2 Z 



