180 THE ROYAL SOCIETY OF CANADA 



larly pinnate, not branched again. One hydrotheca in the axil of each 

 branch and two besides this on the stem between the branch and the 

 one next it on the same side; hydrothecae nearly opposite, of the 

 abietina type but small; margin scarcely even, rather shovel-shaped. 



Gonosome. — Gonangia growing from the upper side of branches, 

 top-shaped with a distinct collar, annulated, annulations near to- 

 gether proximally but farther apart distally. 



Distribution. — Vancouver Island (Dawson); Tledis Village near 

 Susk, B.C., (Nutting); Port Renfrew, Ucluelet (Fraser); Hope Is- 

 land, Nawhitti Bar. 



This species is discussed at length in my West Coast paper. 



Abietinaria filicula (Ellis and Solander) 

 PI. XXV, Fig. 93 



Sertularia filicula Ellis and Solander, Nat. Hist. Zooph., 1786, p. 57. 

 Abietinaria filicula Fraser, West Coast Hydroids, 1911, p. 60. 



Trophosome. — Stem slender, straight in unbranched portion 

 slightly flexuous in branched portion; branches regularly pinnate, often 

 branched again and sometimes more than once. The main stem is 

 divided into quite regular internodes but the branches have few if any 

 nodes and these irregularly placed; hydrothecae nearly opposite, shaped 

 like those of A. abietina but much smaller. 



Gonosome. — Gonangium oval, tapering into a narrow neck above 

 and into a pedicel which is somewhat curved, below; surface smooth. 



Distribution.— Albatross Station 2865, N. 48° 12', W. 122° 49' 

 (Nutting); San Juan Archipelago, Victoria, Dodds Narrows (Fraser); 

 Alert Bay, Departure Bay, Northumberland Channel, Gabriola Pass, 

 Friday Harbor. 



Abietinaria gigantea (Clark) 



PI. XXVI, Fig. 94 



Thuiaria gigantea Clark, Alaskan Hydroids, 1876, p. 230. 

 Abietinaria gigantea Fraser, West Coast Hydroids, 1911, p. 60. 



Trophosome. — Stem stout, with but few branches, these irregu- 

 larly arranged and constricted at the base, similar in all respects to the 

 main stem; nodes absent; hydrothecae arranged alternately with but 

 a short space of the stem between each pair; almost wholly immersed; 

 regularly curved and almost the same size throughout; margin nearly 

 vertical. 



Gonosome. — Gonangia arranged in two rows ou the surface of the 

 st (in, oval, with a distinct pedicel, smooth or slightly wrinkled, distal 

 cm\ truncate, sometimes oblique, without collar. 



