854 Proceedings of the Royal Irish Academy, 



Family— RU:N'CmiD^. 



Genus — RiwciifA. 



Runciua Hancocki, Forbes. 



Runcina Hancocki, Forbes and Hanley. 



Twice found on the shore near Xnightstown, probably among 

 weeds in rock pools. (Gamble). 



Bpuncina (sp. no v. ?). 



A small Tectibranch somewhat similar to the last species in 

 external character, about 3 mm. long, and of a deep vinous 

 red colour, was dredged several times on Ascidian ground in 

 the harbour. We thought at first that it might be the young 

 of some known species, but it is more likely a new species. 

 Having lately found this form in the river Yealm near Ply- 

 mouth, I hope to be able to come to a more definite conclusion 

 respecting its position. 



