BRITISH ZOOPHYTES. 69 



the other, ciliated all over, and bear two tentacles at 

 the broad end. 



This gonozooid is described by Mr. Hineks as inter- 

 mediate between the fixed gonozooid and the medusoid 

 form, — the tentacles representing the usual swimming 

 organs, and the ciliary action replacing the pulsations 

 of the swimming-bell. 



Genus VII. Heterocordtle, All. (erepo^, dissimilar, 

 Kop8v\T], a club.) 



As last genus, except that the gonophores develope 

 fixed sporosacs. — T. H. 



1. H. CONYBEAEI, ^ZZ. 



Hab. : Glengarifi; co. Cork (All), Oban {T. H.). 

 Height I in. 



This species, described by Prof. Allmanin the Annals 

 of Nat. Hist, for July, 1864, resembles D. conferta, 

 from which it is mainly distinguished by its smaller 

 growth and fixed sporosacs. 



Genus VIII. Bougainvillia, Lesson. 

 (Named after a French traveller. Admiral Bougainville.) 



Stem branched, rooted by a filiform stolon, the 

 coenosarc enclosed in a polypary. Polypites and 

 tentacles as in last genus. Gonopliores developed from 

 the branches, and originating free zooids. — T. H. 



This genus, with Perigonwius, is referred to a family 

 Bougainvillidce by Prof. Allman, who states that the 

 polypites are distinguished from those of Eudendriidce 

 by "not having the hypostome abruptly differentiated.' ' 



