Weiss — Fauna and Flora of Valencia Harbour, Ireland. 799 



VIII. — Eepoet on the Alg^. By Peop. F. E. Weiss, B.Sc, 

 Owens College, Manchester. 



"When I accepted the kind invitation of my friends, Mr. E. T. 

 Browne and Mr. E. W. Gamble, to make use of the facilities which 

 the establishment of a temporary Biological Station on Valencia 

 Island offered, I went there with no special intention to investigate 

 the Algal flora of that interesting district from a systematic point of 

 view, but mainly to make some additions to the herbarium of the 

 museum at the Owens College, and also to make preparations of the 

 reproductive organs and collect material for the use of my students. 

 That in so doing I should come across some forms unrecorded for the 

 -district and sometimes even for Ireland was to be expected, and I 

 gladly avail myself of this opportunity of putting them on record, so 

 that the useful " Revised List of British Marine Algse," published by 

 Messrs. E. M. Holmes and E. A. L. Batters^ may be further com- 

 pleted as far as the distribution of some of the species in Ireland is 

 concerned. According to the division of the coast-line into tabulation 

 areas by Messrs. Holmes and Batters, which are prefixed to their 

 revised list and amended in the appendix published in the notes at the 

 end of vol. v., Valencia would be included in district 11, which 

 embraces the coast from Slyne Head to Crow Head, including the 

 outlying islands. 



There is no doubt that this coast-line is very rich in seaweeds, and 

 has been far less explored than many other regions. Indeed, Professor 

 Johnson pointed out the need for a more thorough investigation of 

 the seaweeds of the south and west of Ireland ; and I feel sure that a 

 more systematic search than I was able to undertake would reveal 

 many more forms which are still unrecorded for the west of Ireland. 

 But apart from any gain to our knowledge of the distribution of 

 species by establishing their occurrence in the various tabulation are as, 

 every collector of seaweeds would be interested in those forms which 

 are well known to occur on the west coast of Ireland, and which are 

 in some measure typical of its Algal flora. Thus Petrocelis cruenta, 

 Nemalion midtijidwn, Ceramium acanilionoton , all stated by Harvey in 

 his Phycologia Britannica, to be common on the west coast of Ireland, 



' Annals of Botany, vol. v., 1890. 

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