[ 137 ] 



VII. 



EEPOET ON THE HTDEOIDA COLLECTED BY THE EOTAL 

 IRISH ACADEMY SUEYEY OF THE SOUTH-WEST 

 COAST OE lEELAIs^D, 1885, 1886, AND 1888. By J. E. 

 DTJEEDEN, A.E.C.SC. (Loud.). 



[Eead June 12, 1893.] 



Up to tlie present time no attempt has been made to give a list of tlie 

 Hydroids occurring on the west coast of Ireland. In fact, the only 

 lists of Irish Hydroids of any importance is that for Dublin Bay,^ 

 which only contains about fifty species ; and that contained in 

 Mr. "WilKam Thompson's Natural History of Ireland, which records 

 about forty-five species. They have been studied very little from the 

 north and west coasts. The material dredged by the Academy (in 

 the years 1885,^ 1886,^ and 1888*) has afforded me opportunity of 

 examining many of the forms occurring on the south-west coasts. 

 The present Eeport records forty-six species obtained from various 

 points. Of these fourteen are new to Ireland, some of them being 

 rare forms. They have been obtained from the material now in 

 the custody of the Science and Art Museum, growing upon various 

 molluscs, Crustacea, and upon one another. 



The following is the list of species now recorded for the first time 

 from Ireland : — 



Podocoryne ca/rnea, Sars. Campanulcvria (?) ra/ridentata, 

 Fodocoryne areolata, Alder. Alder. 



Atractylis arenosa, Alder. Calycella fastigiata, Alder. 



Perigonimus repens^ T. S. Wright. Cuspidella costata, Hincks. 



Perigonimus (?) linearis^ Alder. Diphasia fallax, Johnston. 



Dicoryne conferta, Alder. Biphasia alata, Hincks. 



Bouqainvilliaramosa,Ydca.'Qen.QdiQn. Plumularia halecioides, Alder. 

 Tubulmia simplex^ Alder. 



1 Brit. Assoc. Fauna of Dublin, 1878. 



- " First Eeport on the Marine Fauna of the South-West of Ireland." Proc. 

 Eoyal Irish Acad., 2nd Ser., Vol. iv., No. 5 (Science), 1886, p. 599. 



^ " Second Eeport on the Marine Fauna of the South-West of Ireland." Prcc. 

 Eoyal Irish Acad., 3rd Ser., Vol. i., No. 1 (Science), 1888, p. 29. 



* There was no report drawn up of this Expedition. 



H.T.A. PEOC, SEE. III., VOL. in. L 



