[fraser] HYDROIDS OF THE VANCOUVER ISLAND REGION 167 



Halecium labrosum Aider 



PI. XX, Fig. 74 



Halecium labrosum Alder, Ann. and Mag. N.H., 3rd ser., 3, 1859, 



p. 354. 

 Halecium labrosum Hincks, Br. Hydroid Zoophytes, 1868, p. 225. 



Trophosome. — Stem fascicled, sparsely branched, primary branches 

 fascicled, secondary branches pinnately arranged; these may 

 branch again; the pedicels are borne singly or in pairs from the distal 

 end of the internode; three or four annulations at the proximal end 

 of the internodes of the branches and about the same number al 

 the base of the pedicels, which are long and tubular; margin of hydro- 

 phore very distinctly everted; when reduplication takes place the tube 

 between the hydrophores is long. 



Gonosome. — Gonangia ovate, growing in rows on the upper sur- 

 faces of the branches, male and female more nearly alike than in 

 other species of this genus. 



Distribution. — North of Gabriola I., Dodds Narrows. 



Halecium parvulum Bale 



PI. XXI, Fig. 75 

 Halecium parvulum Bale, Proc. Linn. Soc, N.S.W., 1888, p. 760. 

 Halecium gracile Bale, Proc. Linn. Soc, N.S.W., 1888, p. 759. 

 Halecium gracile Clark, Mus. Comp. Zoll., Harvard, vol. XXV, No. 



6, 1894, p. 74. 

 Halecium balei Fraser, West Coast Hydroids, 1911, p. 46. 



Trophosome. — Stem and larger branches fascicled; main branches 

 few and short; branches not numerous proximally but more so dis- 

 tally. In some cases near the tip of the branches there are many short 

 branchlets or pedicels, so much so that it looks not unlike the tip of a 

 branch of H. densum but the latter is stouter and more wavy. The 

 proximal internodes are long but the distal are quite short, the nodes 

 are oblique; occasionally the pedicel or the branchlet may be more or 

 less annulated; margin of hydrotheca well everted. 



Gonosome. — Female gonangia large, oval compressed; orifice 

 large, terminal, ova large; male somewhat similar in shape, but much 

 smaller; found growing directly from the branches, sometimes in the 

 place of hydrophores. 



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

 sure Shoal, Hammond Bay, Dodds Narrows, Gabriola Pass, Porlier 

 Pass, off Matia I., off Sucia Is., Ruxton Passage, Friday Harbor. 



Bale described two specimens of Halecium, H. gracile and H. par- 

 vulum, which are probably the same species. IT gracile, the name 



