[fraser] HYDROIDS OF THE VANCOUVER ISLAND REGION 141 



Campanularia fascia Torrey, Hyd. of the Pacific Coast, 1902, p. 52. 

 Campanularia verticillata Fraser, 1911, p. 34. 



Trophosome. — Main stem fascicled throughout, ending like a 

 stump; main branches also fascicled ; hydranths arranged in irregular 

 whorls, with rather long pedicels, annulated or wavy throughout; 

 hydrothecae rather large, broad for their length, slightly more expanded 

 towards the margin; margin with 12-14 low blunt teeth. 



Gonosome.- — Gonangia somewhat fusiform except that the distal 

 end is prolonged into a neck, sessile on the stem; often occurring in 

 groups around the stem, although not forming a whorl; ova large. 



Distribution. — Puget Sound (Nutting); Queen Charlotte Is., 

 Dodds Narrows, San Juan Archipelago (Fraser); widely distributed, 

 found at Rose Spit, Claninnick, Clayuquot Sd., off Lasqueti I., off 

 Clarke Rock, off West Rocks, off Snake I., Northumberland Channel, 

 Dodds Narrows, Gabriola Pass, Gabriola Reefs, off Matia I., off 

 Waldron I., off Sucia Is., Griffin Bay, Upright Channel, Friday 

 Harbor, Deer Harbor, Pt. Townshend. 



Campanularia volubilis (Linnaeus) 



PI. XIII, Fig. 38 



Sertularia volubilis Linnaeus, Syst. Nat., 1767, p. 1311. 

 Campanularia volubilis Fraser, West Coast Hydroids, 1911, p. 34. 



Trophosome. — Stems unbranched serving as pedicels, arising from 

 a stolon that may be plain or twisted ; pedicels slender, spirally twisted 

 or annulated; hydrothecae tubular, narrow and deep; margin with 

 about 10 rounded teeth which may be very shallow so that the margin 

 appears merely sinuous. 



Gonosome. — Gonangia flask-shaped, with long narrow neck, 

 borne on the stolon by means of short annulated pedicels. 



Distribution. — Bare Island (Hartlaub) ; Banks I., Ucluelet, San 

 Juan Archipelago (Fraser) ; Northumberland Channel, Dodds Narrows. 



Genus CLYTIA 



Trophosome. — Stem unbranched .or irregularly branched. 

 Gonosome. — Gonophores producing free medusas, somewhat spheri- 

 cal, with four tentacles at time of liberation. 



Key to the species of Clytia in the Vancouver I. region. 



A. Stem usually much branched 



a. Gonangium smooth C. attenuata 



b. Gonangium corrugated C. edwardsi 



B. Stem unbranched or with but one or two branches 



a. Hydrotheca ribbed C. kincaidi 



