182 THE ROYAL SOCIETY OF CANADA 



Gonosome. — Gonangia borne in long rows on the front of branches, 

 obconical with a small curved pedicel and a distinct collar which is 

 tapering, aperture circular, surface regularly but not deeply corrugated. 

 The sporosacs pass out of the gonangium into an acrocyst. 



Distribution. — Port Renfrew, Vancouver I. (Nutting); San Juan 

 Archipelago, Dodds Narrows, Departure Bay, Port Renfrew, Ucluelet 

 (Fraser); Northumberland Channel, Pylades Channel, Gabriola Pass, 

 Nawhitti Bar, Friday Harbor, Copalis, Pt. Grenville. 



Abietinaria rigida Fraser 



PI. XXVI, Fig. 97 



Abietinaria rigida Fraser, West Coast Hydroids, 1911, p. 61. 



Trophosome. — Main stem stout, rigid, straight or but slightly 

 flexuous with annulations at the base but very few nodes in the re- 

 mainder of the stem; stems are found over 50 mm. in length that are 

 entirely unbranched; branches with regular pinnate arrangement, 

 making a wide angle with the stem and constricted at the base; like 

 the stem they are rigid and brittle so that a colony is seldom found 

 with all the branches complete. Hydrothecse alternate, stout, narrow- 

 ing gradually but slightly towards the circular opening, with no very 

 distinct neck; the margin, which is even, lies parallel to the axis of the 

 stem or branch; hydrothecae well immersed, seldom more than one- 

 fourth being free. 



Gonosome. — Gonangia are borne on the upper surface of the 

 branches, elongated oval, with a distinct pedicel, collar short but 

 distinct, aperture large; surface smooth or very slightly wrinkled. 



Distribution.— Albatross Station 2865, N. 48° 12', W. 122° 51', 

 48 fathoms (Nutting); San Juan Archipelago (Fraser); Nawhitti 

 Bar, Departure Bay, off Matia I., of Waldron I., off O'Neale I., 

 Friday Harbor, San Juan Channel, Upright Channel, Deer Harbor, 

 Griffin Bay. 



Abietinaria traski (Torrey) 



PI. XXVII, Fig. 98 



Sertularia traski Torrey, Hyd. of the Pacific Coast, 1902, p. 69. 

 Abietinaria traski Fraser, West Coast Hydroids, 1911, p. 63. 



Trophosome. — Stem long, straight, even in the younger colonies 

 the proximal half is free from branches and in the older ones, the 

 branched portion is relatively small as compared with the branched 

 portion; branches very regularly pinnate, and graded so well in length 

 that the colony is very symmetrical and graceful; although the stem 



