158 THE ROYAL SOCIETY OF CANADA 



Trophosome. — Colony small, seldom over 10 mm., stem irregu- 

 larly branched or even unbranched; it gives rise to the hydranth 

 pedicels in regular alternation; commonly the pedicel appears as 

 though it were the continuation of the stem below its origin while 

 the continued portion of the stem appears like a branch given off 

 from it; this makes a distinct geniculation ; where there are branches 

 given'off the regularity is interfered with; stem, branches and pedicels 

 are all annulated throughout; the pedicels are short with 3 or 4 

 annulations; hydrothecae rather stout for the length, almost oval 

 in shape; opercular segments 10-12, about one-third of the total 

 length of the hydrotheca. 



j? Gonosome. — Gonangia in the axils of the lower branches and 

 pedicels, nearly oblong but tapering slightly towards the base 

 and somewhat flattened at the distal end; each gonangium produces 

 a single medusa. 



Distribution. — West Seattle (Fraser) ; West Seattle. 



The material recently examined may be some of the same lot 

 as that reported previously as it was in the University of Washington 

 collection and that reported was also from Prof.Kincaid's collection. The 

 species that Hartlaub describes as C. chilensis from the coast of 

 Chile,' 23 looks very much the same as this species. If it is the same 

 species it has rather an unusual distribution as Nutting originally 

 described it from Juneau, Alaska, and it has not been reported else- 

 where except in the above reference. 



Genus CUSPIDELLA 



Trophosome. — Hydrothecae sessile on f a creeping rootstock, 

 tubular. 



Gonosome. — Unknown. 



Key to the species of Cuspidella found in the Vancouver I. region. 



A. Hydrotheca large C. grandis 



B. Hydrotheca small C. humilis 



Cuspidella grandis Hincks 



PI. XVIII, Fig. 62 

 Cuspidella grandis Hincks, Br. Hydroid Zoophytes, 1868, p. 210. 



Trophosome. — Sessile, tubular hydrothecae grow from a regularly 

 creeping stolon; length may reach -8 mm. and diameter about 15 

 mm.; operculum of 8-10 segments. 



Gonosome. — Unknown . 



23 Die Hydroiden der Magalhaenischen Region und Chilenschen Kttste, 190S, 

 P . 589. 



