[fraser] HYDROIDS OF THE VANCOUVER ISLAND REGION 169 



Trophosome. — Stem short, stout, fascicled; branches simple, 

 arranged alternately, divided into internodes which are not annulated ; 

 each internode gives rise to a hydrophore from its proximal portion; 

 pedicels vary much in length; hydrophore margin slightly everted. 



Gonosome. — Unknown. 



Distribution. — North of Gabriola I. 



Halecium scutum Clark 

 PI. XXI, Fig. 78 



Halecium scutum Clark, Alaskan Hydroids, 1876, p. 218. 

 Halecium scutum Fraser, 1911, p. 49. 



Trophosome. —Stem stout, fascicled, much and irregularly branched; 

 primary branches fascicled; ultimate branches much lighter in 

 color; divided by more or less oblique nodes into short wedge-shaped 

 internodes, each of which has one or two hydrophores varying some- 

 what in position from extreme distal end of the internode to some 

 distance from it; hydrophores sessile, if reduplicated, the second sits 

 quite close to the first; rather stout, very slightly everted. 



Gonosome. — Gonangia obovate with an aperture projecting from 

 the side near the distal end, although varying somewhat in position. 



Distribution. — San Juan Archipelago (Fraser); Copalis Beach, 

 Washington. 



Halecium tenellum Hincks 



PI. XXI, Fig. 79 

 Halecium tenellum Hincks, Ann. and Mag. N.H., 3rd ser., 8, 1861, 



p. 252. 

 Halecium tenellum Fraser, West Coast Hydroids, 1911, p. 49. 



Trophosome. — Colony small, not over 15 mm. in height; stem 

 delicate, sometimes annulated or wavy; irregularly branched; 

 branches given off below the hydrophores, making almost a right 

 angle with the stem; hydrophores strongly everted. 



Gonosome. — "Gonangia oval or ovate, smooth, borne at the base 

 of the branches or below the hydrophores." (Nutting). 



Distribution. — San Juan Archipelago (Fraser) ; Rose Spit, Prince 

 Rupert, Swiftsure Shoal, Hammond Bay, north^of Gabriola I., Pylades 

 Channel, Gabriola Pass, off Matia I. 



No gonangia were obtained. Description and drawing are from 

 Nutting. 



Halecium washingtoni Nutting 

 PI. XXII, Fig. 80 

 Halecium geniculatum Nutting, Hyd. of Alaska and Puget Sound, 

 1899, p. 744. 



