800 Proceedings of the Royal Irish Academy. 



are abundant on the rocks at Valencia, while some of the rarer forms,, 

 such as Cladophora rectangidaris and Stenogramme interrupta, which 

 occur in deeper water below low tide-mark, are occasionally thrown 

 up, or may be dredged in the channels between the island and the 

 mainland. Cladophora rectangular is ^ abeautiful and delicate green Alga, 

 first recorded in 1832 by M. Borrer for Torquay as a very rare form, was 

 afterwards found to be abundant by M'Calla in 1840 in Eoundstone 

 Bay, where it can be dredged at depths of 4 to 6 f ms. In this locality 

 it is washed up in large quantities at the close of the summer, and is 

 carted off for manure. Stenogramme, growing probably at similar 

 depths, is also not new to Ireland, having been found both on the 

 north and also on the south coasts, regions 10 and 14 of Holmes and 

 Batters, but is new to the western area. In England it is only known 

 from the south coast. 



Another interesting form which attains to great perfection on the 

 west coast of Ireland is Delesseria hypoglossum, of which Miss C. 

 Delap has recently sent me as luxurious a specimen as that figured 

 in the Phycologia Britannica, which illustration was made from an 

 exceptionally beautiful specimen obtained by Miss Hutchinson in 

 Bantry Bay. 



In the list of Algse which follows, the figure (11) after the name 

 denotes that this figure, indicating the west of Ireland tabulation 

 area, should be added to Messrs. Holmes and Batters' Revised List. 

 In some cases these records were overlooked by Messrs. Holmes and 

 Batters ; in other cases the species have been recorded since the publi- 

 cation of their list. The letters n.I. and n.d. prefixed to the name 

 indicates that as far as I have been able to ascertain these forms have 

 not been previously recorded for Ireland (n.I.) or for the district 

 (n.d.) 



I append tbe full list of Algae collected by me during the month I 

 spent at Valencia, not with any pretensions to a complete or exhaus- 

 tive list of that locality, for, as I have stated above, I was not 

 specially concerned with working out the Algal flora of the district, 

 but because I think the list may be both of local and of general interest, 

 as representing forms most commonly met with on the island, and 

 therefore typical of the locality. 



