140 Proceedings of the Royal Irish Academy. 



Family IX. — Eudekdeiid^, 



1. Eudendrium rameum, Pallas. 



This common species was dredged from off the Great Skellig, off 

 Galley Head, and south of Glandore Harbour. A fine colony was also 

 obtained from Log 73, at a depth, of fifty fattoms, growing on a large 

 Pinna. 



2. Eudendrium capillare, Alder. 



This is a much smaller and rarer form of this genus. It is 

 mentioned from only four or five British localities. Prof. Haddon 

 recorded it for the first time for Ireland in his Preliminary Eeport on 

 the Fauna of Dublin Bay.^ It was obtained by th.e survey from Log 

 62, Berehaven. 



Family X. — BiirEE.rD^. 

 1. Atractylis arenosa^ Alder. 



A fine colony of this minute and rare zooph.yte was obtained 

 amongst the loose material from Log 73, at a depth of 50 fathoms. 

 The creeping stolon is of very considerable length, and only gives off 

 the simple erect stems at wide intervals. The surface of the polypary 

 is covered in most parts with fine mud and a few broken spicules. 

 The stems bearing the polypites vary much in length, expanding 

 gradually from the base to the top. "Where the polypite is retracted 

 it is closed in by the polypary. The specimens do not show the 

 gonophores which give rise to the peculiar mode of reproduction so 

 graphically described by Dr. T. Strethill "Wright.^ 



It has been recorded from Tynemouth, Cullercoats, Largo, and 

 Filey Brigg, but never previously from Ireland. 



2. Perigonimus repens, T. S. Wright. 



The collections have proved themselves very rich in different forms 

 of the genus Perigonimus, but many of them seem to be different from 

 any described species. They are a group of minute zoophytes, gene- 

 rally of simple habit. One form, which I have submitted to Mr. 

 Hincks for examination, presents peculiarities in its mode of growth 

 which seem to separate it from forms already described. Hincks 



1 Proc. Roy. Irish Acad., 2nd Ser., Vol. iv., No. 5 (Science). 

 - Qi:art. Jour. Micros. Science, Yol. iii., N. S., p. 47. 



