DuERDEN — On some new and rare Irish Polyzoa. 123 



report of the "Challenger" Polyzoa, to include forms of which 

 Pedicellina gracilis, Sars, may he taken as the type. Mr. Lomas, 

 Tvorking over the material ohtained hy the Liverpool Biological Com- 

 mittee from the Isle of Man, has formed a new species, Ascopodaria 

 nodosa, Lomas. I have obtained it from Dublin Bay, and have also 

 found it in material obtained from the west coast by the Eoyal Dublin 

 Society Survey. 



In the preparation of the Paper I have to thank Prof. Haddon for 

 many suggestions and kind assistance, the Kev. T. Hincks, F.Pt.S., 

 for his help on the genus Eetepora, and Dr. Scharff, Curator of the 

 jS'atural History Department of the Dublin Science and Ai't Museum, 

 who has custody of the material of the Eoyal Irish Academy Survey, 

 for the loan of the specimens. 



All the slides and preparations which I have made in the examina- 

 tion of species here mentioned, will be ultimately handed over to the 

 Science and Art Museum for future reference. 



Sub-order L— CHEILOSTOMATA, Busk. 



Family . — Eschaeid^. 



Genus. — Eetepoea, Imperato. 



There are only two British species of this genus, and I have to 

 record both from the Irish coasts. 



1. Retepora leaniana, King. 



This species was obtained by the Eoyal Irish Academy Survey of 

 1886 from log 53, 5-8 miles west of Great Skellig, at a depth of 

 70-80 fathoms. It is considered a northern form, and the only Irish 

 locality recorded previously is off Cape Clear, by Professor Allman. 

 Mr. Hincks Brit. Mar. Polyz., p. 392, in a footnote, remarks, in 

 regard to Allman' s specimen from Cape Clear : — "As no other southern 

 locality for it is known, I venture to think there may have been 



genus, but on grounds -n^hicli are quite untenable. "When Hincks's description and 

 figure of Barentsia were published no account of tbis generic form had appeared. 

 Busk had obtained a kindred form and bad labelled it in his own collection 

 Ascopodaria. Busk endeavours to justify his rejection of Hincks's name from the 

 fact that a pediceUine form, which the latter had named Pedicellinopsis, was really 

 a Barentsia, and that as Hincks had given two distinct names to the same generic 

 type he was at liberty to discard both the names, and substitute his own hitherto 

 unpublished name — a course certainly not warranted by common usage. 



K 2 



