RECORD OF ADDITIONAL HYDROIDA FROM THE I.O.M. 49 



argentea, which is abundant (in the young state) in the 

 N.E. is represented in the N.W. by only two or three 

 small fragments, and only "several very small pieces" 

 w^ere obtained by the L.M.B.C. in the S. Of the rare 

 Thuiaria articulata I have found several good specimens 

 in the N.W., none on the other side. I have also dredged 

 fine specimens of Aglaophenia mijriophijllum in plenty off 

 the Dhoon, but one small colony only has appeared in the 

 N.W. Neither of the two last-named species has, I 

 believe, been reported from the Isle of Man since the time 

 of Forbes. 



As a summary of my results up to the present time I 

 have the gratification to record 12 Hydroida not hitherto 

 reported from the Isle of Man, of which 5 are new to the 

 district of Liverpool Bay. They are as follow^s : — 



New to Isle of Man only. 



Tubular ia coronata, Abildg. From the N.W. 



Ohelia geniculata, Linn. From the N.W. and N.E. 



Ohelia longisswia, Pallas. From the N.W. 



Diphasia attenuata, Hincks. From the N.W. & N.E. 



Biphasia pinaster, Ellis and Sol. From the N.W. 



Dipliasia tamarisca, Linn. From the N.W. 



Sertularia cupressina, Linn. From the N.W. 

 New to the Isle of Man and L.M.B.C. district. 



Tubular ia attenuata, Allman. From the N.W. 

 . Gainpanularia (^) raridentata,A\dei. From the N.W. 



Halecium muricatum, Ellis and Sol. From the N.E. 



Halecium tenellum, Hincks. From the N.E. 



Sertularella tenella, Alder. From the N.W. and 

 N.E. (abundant). 



