[fraser] HYUROIDS OF THE VANCOUVER ISLAND REGION 149 



of each branch and pedicel, each pedicel with several annulations 

 at the base and below the hydrotheca; hydrotheca long for its width, 

 cylindrical for the upper half or two-thirds and gradually tapering 

 to the base; teeth 10-14, deeply cut and rather sharp. 



Gonosome. — Gonophores borne on the stolon and on the stem, 

 with distinctly annulated pedicels; gonangia oblong-oval, often 

 flaring a little at the rim ; each gonophore bears four or five sporosacs. 



Distribution. — Departure Bay, West of Hammond Bay, off West 

 Rocks, off Snake I., north of Gabriola I., Northumberland Channel, 

 Dodds Narrows, Gabriola Pass, off Matia I., Friday Harbor. 



Calkins reported a species that he called Campanularia gracilis 

 from Port Townshend, but his enlarged figure of a gonophore is 

 certainly that of a Clytia, probably that of Clytia edwardsi, which 

 species is very much similar in its general appearance to Gonothyrœa 

 gracilis. His enlarged hydrotheca also looks more like the Clytia 

 hydrotheca but the drawing which is not so much enlarged might be 

 either the one or the other. The gonophores here look more like 

 those of G. gracilis. It is quite possible that he had both of these 

 species in his material. 



In the majority of specimens obtained, the size of the gonangia 

 as well as that of other parts of the colony correspond well with those 

 specimens obtained along the Atlantic Coast, the height of the gonan- 

 gium being • 75 or -8 mm., but in a few cases a great increase in size 

 was observed, some being found with a length of over 2 mm. This 

 difference is represented in the figures. 



Gonothyraea inornata Nutting 



PI. XV, Fig. 48 



Gonothyrœa inornata Nutting, Harriman Hydroids, 1901, p. 175. 

 Gonothyrœa inornata Fraser, West Coast Hydroids, 1911, p. 37. 



Trophosome. — Colony reaching a height of 50 mm.; main stem 

 dividing near the base into several branches that pass directly upward, 

 usually without any further branching; hydranth pedicels given off 

 alternately in the same plane; branches annulated, usually three 

 annulations, above the origin of the pedicels. There is a slight 

 tendency to geniculation. Pedicels short, annulated throughout; 

 hydrotheca funnel-shaped, margin entire. 



Gonosome. — Gonophores borne in the axils of the pedicels, or 

 taking the place of pedicels, on short annulated pedicels, obconic, 

 truncate distally, smooth or with a slight tendency to corrugation; 

 there is but one sporosac in each gonangium. 



Distribution. — Friday Harbor. 



