[ 121 ] 



YI. 



ON SOME NEW AND EAEE lEISH POLYZOA. By J. E. 

 DUEEDEN, A.E.C.Sc. (Lond.), Demonstrator in Biology and 

 Palaeontology at the Eoyal College of Science, Dublin. 



(Plate V.) 



[COMMTTNICATED BY THE SECKETAKT.] 

 [Read May 8, 1893.] 



Being at present engaged upon the Hydroids and Polyzoa collected by 

 the Eoyal Irish Academy Dredging Survey of the South-west Coast 

 of Ireland during the years 1885/ 1886,^ and 1888,^ and upon those 

 collected by the Eoyal Dublin Society Fishery Survey of the west of 

 Ireland in 1890* and 1891, I have drawn up the following notes, 

 based principally upon specimens collected by the former expeditions, 

 and a few upon my private collections. 



The west-coast of Ireland is proving itself very rich in the rarer 

 species of these two groups of animals ; and from the quantity of 

 material still unexamined many other interesting discoveries may be 

 expected. These forms of life, from this portion of the British Isles, 

 have as yet received very little attention. The results, so far, are 

 very encouraging, and when fully investigated, will, no doubt, also 

 prove of great interest in relation to geographical distribution. 



The present paper concerns itself only with the results, so far 

 obtained, as concern the genera Eetepora and Crisia, the family of the 

 Triticellidse, and the genus Barentsia. 



There are only two British species of the genus Eetepora at present 

 known, and I have to record both from the south-west of Ireland. 

 H. heaniuna, King, is mentioned by Prof. AUman from Cape Clear, 



^ " First Eeport on the Marine Fauna of the South-west of Ireland," Proceed. 

 Roy. Irish Acad., 2nd Ser., Vol. iv. (Science), 1886, p. 599. 



- "Second Report on the Marine Fanna of the South-west of Ireland," hy 

 Prof. Haddon and Rev. W. S. Green. Proceed. Roy. Irish Acad., 3rd Ser., Vol. i., 

 1888, p. 29. 



^ Unfortunately there was no Report of this Expedition drawn up. 



* Proceed. Roy. Duh. Soc, Vol. vii. (N. S.), 1892, p. 221. 



K.I.A, PEOC, SEE. III., VOL. III. K 



