WEST COAST HYDEOIDS 51 



Bering Sea, N. W. of St. Lawrence Island (Jaderholm) ; Dodd's 

 Narrows. 



Genus HEBELLA 



"Troplwsome. — Pedicels arising from a creeping rootstock, 

 very short. Hydrothecfe tubular, with entire margins, without 

 opercula, and having their cavities separated from those of the 

 stem by a partial septum. Hydranths with a conical proboscis.'* 

 (Nutting). 



This genus has been moved around from one family to another 

 and really does not properly belong to any of the families de- 

 scribed up to the present. On account of its hydrothecal sep- 

 tum, it has been placed with the Campamilaridce, but the tubular 

 hydrotheca and more especially the conical h^^postome makes it 

 very unsuitable for guch a home. The only difficulty there is in 

 putting it in the Lafoeidce arises from the presence of the hydro- 

 thecal septum. As this paper is intended to be largely a work on 

 distribution, I do not feel justified in making a new family for 

 the genus. As it seems to have the closest affinities to the La- 

 foeidcE I have placed it with, rather than in. that family. 



HEBELLA POCILLUM (Hincks) 



Lafaa pociUum HixcKS. British Hvdroid Zoophytes, 186S, p. 204. 



Lafcea pocilliim Clakk, Alaskan Hydroids, 1876, p, 215. 



HeheUa pociUum Xuttixg. Hydroids of the Harriman Ex. 1901, p. 17.5. 



Distribution. — Nunivak Island, Alaska (Clark) ; Kadiak, 



Alaska (Nutting). 



Genus LAFCEA 



Trophosome. — Stem fascicled throughout the greater part of 

 its length in a mature form. Hydrotheca generally free from 

 the stem, though sometimes slightly immersed in it. 



Gonosome. — A 'Coppinia' mass. 



LAFCEA ADH.5:EEXS Xutting 

 Lafaa adhcerens Xuttixg. Hydroids of the Harriman Ex. 1901, p. 178. 

 Distribution. — ^Kadiak, Alaska (Nutting). 



LAFCEA DUMOSA (Fleming) 



Sertularia dumosa Fleming, Edin. Phil. Jour. II, 1828. p. 83. 

 Lafcea dumosa Clark, Alaskan Hydroids, 1876, p. 210. 

 Lafcea dumosa Xctting, Hydroids from Alaska and Puget Sound, 1899, 

 p. 7-41. 



