48 



[From Trans. Biol. Soc, L'pool. Vol. VI.] 



EECOED of Additional HYDKOIDA from the 

 ISLE OF MAN. 



By G. W. Wood, F.I.C. 



[Read April 8tli, 1892.] 



I HAVE much pleasure in submitting to the Biological 

 Society a list of some Hydroida from the Isle of Man, 

 which have not been previously recorded.* I have made 

 numerous dredgings there during the last few years, 

 chiefly in moderately deep water (20 — 30 fathoms). The 

 forms belonging to other groups which I have preserved 

 may be reported upon on some future occasion. 



Hydroida have also been procured for me by some of 

 the Manx trawlers, and parcels continue to be forwarded 

 from time to time, so that the present list is likely to be 

 extended. I have confined my attention to the fauna of 

 the N.W. and N.E. coasts, the south end of the Island 

 having already been investigated during the L.M.B.C. 

 dredgings, and those of Prof. Herdman, as recorded in the 

 first volume of the Fauna of Liverpool Bay. 



Although the area represented by the Isle of Man is 

 comparatively small, the habitats of some of the species 

 are somewhat sharply defined. Some of the species found 

 by the L.M.B.C. in the S. and other species reported from 

 the N. are altogether absent from the N.E. and N.W. and 

 vice versa. Diphasia pinaster, a species not hitherto 

 reported from the N. or S., is quite common in the N.W. 

 but absent again in the N.E. Another species, Sertularia 



* [The Report iii)on the Hydroida of the L.JM.B.C. District will be found 

 in Vol. I, of the " Fauna of Liverpool Bay," p. 95. — Ed.] 



