804 Proceedings of the Royal Irish Academy. 



Codium tometitosiim, found by him in 1891, both at Kilkee, Co. Clare, 

 and at Castletown, Berehaven. 



Ascocychis orhicularis, which was recorded for Ireland by Prof. 

 Johnson and Miss Hensman (Irish K'at., vol. iv., p. 241^, was not tm- 

 common on the leaves of Zoster a, and on the same plant I found, not 

 uncommonly, small growths of Castagnea zoster {^ of Thuret, the 

 Ifesoglcea virescens, var. %ostericola, of the Phycologia Britannica. This 

 plant is not new to Ireland, though not marked as recorded from 

 Ireland in the Revised List, for Harvey mentions that it was found by 

 M'Calla in Eoundstone Bay, and it has since then also been described 

 by Prof. Johnson from the same locality (Irish Nat., iv., p. 74 and 

 p. 241). 



Aylao%onia reptans has, since the publication of the Revised List, 

 been recorded by Prof. Johnson for both the S.W. of Ireland and also 

 for Belfast Lough, i.e., for areas 11 and 12. 



The most interesting discovery I made at Yalencia was the pre- 

 sence of a small red seaweed beneath the cuticle in a couple of speci- 

 mens of Alcyonidium gelatinosum. The Alcyonidium had quite a red 

 appearance, so uniformly had the Alga spread below the yellowish 

 horny covering of the Polyzoon. Prom time to time small fructifying 

 branches were put forth, apparently through cracks in the horny 

 covering. I put these specimens, of which I had made some prepara- 

 tions, retaining their original colour, into the hands of Dr. 0. V. 

 Darbishire for description ; and he has published an account of this 

 Alga in the Berichteder Deutschen Botanisclien Gesellschaft, Bd. xvii., 

 No. 1, 1899. He finds the Alga to be a new species of Chantransia, 

 to which, from its peculiar mode of life, he has given the name 

 endozoica. A Chantransia of somewhat similar character, but grow- 

 ing endophytically, i.e., growing in tissues of other Algae, notably 

 Chordaria flayelUformis, has been described by Mr. E. A. L. Batters 

 under the name of Chantansia microscopica.^ Alcyonidium is also 

 known to be attacked by a green Alga, Epicladia flustrce, Eke. var. 

 Phillipsii, Batt.,^ and by a brown Alga, Entodictyon infesta7is, Gran.^ 



Scinaiafurcellata, Bivona, which was not recorded from Ireland in 

 the Revised List, has since been recorded from the north side of Belfast 

 Lough by Professor Johnson and Miss Hensman (Irish Nat., vol. v., 

 p. 252). 



' Batters, E. A. L., 1896. Journal of Botany. 



- Batters, E. A. L., 1897. Journal of Botany, November. 



^ Gran, H. H., 1897. Videnskabscelskabets Ski'ifter. 



