144 THE ROYAL SOCIETY OF CANADA 



Gonosome. — The gonangia grow anywhere, on the stolon, in the 

 axils of the branches or directly from the stems or branches; they are 

 oblong or oval, corrugated; they vary much in size and in the number 

 of the corrugations; they are borne on short pedicels with 2 or 3 

 annulations. 



Distribution. — Port Townshend (Calkins); San Juan Archipelago, 

 Departure Bay (Fraser) ; very extensively distributed throughout the 

 region; found at Banks I., China Hat, Lasqueti I., Nanoose Bay, 

 several points near and in Departure Bay, north of Gabriola I., 

 Northumberland Channel, Dodds Narrows, Pylades Channel, Gab- 

 riola Pass, Porlier Pass, Whaleboat Passage, Friday Harbor, San Juan 

 Channel, Deer Harbor, Port Townshend. 



The finding of the gonosome as reported in my New England 

 paper, corresponding to the gonosome found here previously, fully 

 bears out the conclusion that the species here corresponds exactly 

 to the New England form. 



I have been successful in keeping some of the free medusae until 

 the 8-tentacled stage was reached, at which time there were also 8 

 lithocysts. 



Clytia inconspicua (Forbes) 



PI. XIII, Fig. 42 



Thaumantias inconspicua Forbes, Br. Naked-eyed Medusae, 1848, 



p. 52. 

 Thaumantias inconspicua Wright, Quart. Jour. Micr. Sa, 1862, p. 221. 

 Campanularia inconspicua Calkins, Puget Sound Hydroids, 1899, 



p. 349. 

 Thaumantias inconspicua Fraser, West Coast Hydroids, 1911, p. 40. 



Trophosome.— Colony small, stem usually unbranched; pedicel 

 short and slender, annulated or wrinkled throughout or with a small 

 portion towards the centre smooth; hydrothecae small with 7 blunt 

 but distinctly cut teeth. 



Gonosome. — Gonangia borne on the stolon by means of short, 

 annulated pedicels, obovate, smooth; aperture terminal, large. 



Distribution. — Puget Sound (Calkins); San Juan Archipelago 

 (Fraser); Banks I., Departure Bay, Whaleboat Passage. 



In the study of medusae there has been a great deal of confusion in 

 the case of the two genera, Thaumantias and Phialidium, The general 

 distinction given is that Thaumantias has no lithocysts present in 

 the margin while Phialidium has these. Many of the specimens 

 studied and described have been preserved in formalin which is likely 

 to be acid and hence will attack the small calcareous lithocysts so that 

 they disappear in a very short time. I have observed that in speci- 



