REPORT ON THE POLYZOA. 187 



Genus Boiuerbankia, Farre. 

 Syn. Valheria (part), Jolmst., Hassall, Couch. 

 Contains five British species. 



Boiverbankia imhricata, Adams. 



Sertularia imhricata, Adams, Thomp. 

 Valkeria imhricata, Johnst , Couch. 



Very common. Dredged off Port Erin, by Professor 

 Herdman (ten to fifteen fathoms). Hilbre Island (Lomas). 

 Menai Straits (Pennington). 



Boiverbankia pustulosa, Ellis and Sol. 



Dichotomous tubular coralline.. Ell. 

 Sertularia pustulos a, Ellis and Sol. 

 Vesicularia pustulosa, J. V. Thomps. 

 Valkeria pustulosa, Johnst. 



Menai Straits. Llandudno (Hincks). Isle of Man, 

 dredged by Professor Herdman. 



Genus Farrella, Ehrenberg. 



Syn. Lagenella, Farre, W. Thompson, Hassall. 

 Laguncula, Van Ben. 



Only has one British representative. 



Farrella repejis, Farre. 



Lagenella repens, Farre, W. Thomp. 

 Bouerhankia repens, Johnst. 

 Farrella producta, Hincks. 



There are two varieties of this species, repens and 

 elongata. 



In the British Marine Polyzoa, p. 530, Hincks says : — 

 *' As to the distribution of the species, it is somewhat 

 peculiar that the elongata form, which is too remarkable 

 readily to escape observation, has only been noticed on 

 certain portions of the Lancashire coast, where it occurs in 

 amazing profusion, investing all kinds of marine substances." 



