190 THE ROYAL SOCIETY OF CANADA 



Sertularella albida Kirchenpauer 



PI. XXIX, Fig. 109 



Sertularella albida Kirchenpauer, Nordische Gattungen, 1884. 



p. 42. 

 Sertularella albida Fraser, West Coast Hydroids, 1911, p. 68. 



Trophosome. — Stem stout, branching irregular but tending to 

 be alternate; branches often branched again and as they are not 

 uniform, the whole colony has a ragged, spreading appearance; nodes 

 in both stem and branches deeply cut but irregularly placed; hydro- 

 thecae tubular, curved slightly on the adcauline side and having a 

 distinct bend on the abcauline side, placed closely together and wholly 

 immersed or nearly so; margin with four teeth that are not very con- 

 spicuous; operculum with four flaps. 



Gonosome. — "Gonangia axillary, very large, perhaps the largest 

 found in the genus, ovate, regularly and closely annulated, with 

 short, tubular neck and round terminal aperture." (Nutting). 



Distribution. — Off Matia I., off Waldron I. 



I have no specimens with gonangia. The description and the 

 figure are from Nutting. 



Sertularella conica Allman 



PI. XXIX, F.g. 110 



Sertidarella conica Allman, Hydroids of the Gulf Stream, 1877, 



p. 21. 

 Sertularella conica Fraser, West Coast Hydroids, 1911, p. 68. 



Trophosome. — Colony small, either unbranched or with a few 

 short branches, which are like the main stem; hydrothecae alternate, 

 rather distant, free for about two-thirds of their length, nearly tubular 

 but with the proximal end slightly swollen and the distal end narrow- 

 ing to some extent, an appearance of annulations but these only on 

 the adcauline side of the hydrothecae; margin with four teeth; oper- 

 culum with four flaps. 



Gonosome. — Gonangia on the stem or on the stolon, oval, without 

 distinct pedicel or neck; margin provided with four stout teeth, that 

 may be straight as in 5. polyzonias, or may be curved inward so as 

 to almost meet above the centre of the aperture; surface rugose with 

 distinct crests on the rugosities. 



Distribution.— Townshend Harbor (Calkins); San Juan Archi- 

 pelago, Port Renfrew, Ucluelet (Fraser) ; Northumberland Channel 

 Dodds Narrows, Gabriola Pass, Friday Harbor, Swiftsure Shoal, 

 ( laninnick. 



