206 THE ROYAL SOCIETY OF CANADA 



exception of the first, one on each cauline internode on the side op- 

 posite the process for the hydrocladium and one in the axil of each 

 hydrocladium. 



Gonosome. — Gonangia of two kinds, — one nearly oval, about 

 three times as long as broad with a truncated top or the appearance 

 of a slight collar and the other elongated, with or without a bottle 

 neck. In both cases they are found attached to the process which 

 supports the hydrocladium. 



Distribution. — San Juan Archipelago (Fraser); Nanoose Bay, 

 Departure ' Bay, Clarke Rock, north of Gabriola I., Protection I., 

 Gabriola Pass, off Matia I. 



Plumularia goodei Nutting 

 • PI. XXXVI, Fig. 134 



Plumularia echinulata var. Calkins, Hyd. of Puget Sound, 1899, p. 



363. 

 Plumularia goodei Nutting, American Hydroids, pt. 1, 1900, p. 64. 

 Plumularia goodei Fraser, West Coast Hydroids, 1911, p. 82. 

 Plumularia echinulata Fraser, West Coast Hydroids, 1911, p. 82. 



Trophosome. — Colony small, less than an inch in height; stems 

 growing from a coarse network of rootstocks; stem simple, divided into 

 regular internodes, each of which may bear one or two unbranched 

 hydrocladia. (Torrey says there may be three). In the majority 

 of specimens examined, the proximal internode in nearly all cases 

 bore two hydrocladia, while the distal bore but one each; in either case 

 the hydrothecae are alternate ; there may be one or two non-hydrothe- 

 cate internodes at the base of the hydrocladium or these may be ab- 

 sent; all the rest of them bear one hydrotheca each; intermediate 

 internodes rare but sometimes present; hydrothecse nearly equal in 

 depth and breadth, margin flaring; septal ridges absent; two supra - 

 calycine nematophores, one mesial nematophore on each hydro- 

 cladial internode and one or two in the axil of the hydrocladium; all 

 monothalamic. 



Gonosome. — Gonangia taking the place of hydrocladia, the pro- 

 cesses from the internode supporting these as they do the hydrocladia, 

 large, irregularly oblong, truncate distally, tapering slightly proxi- 

 mally. 



Distribution. — Port Townshend (Calkins) ; Port Renfrew (Fraser) ; 

 Gabriola Pass, Friday Harbor. 



Torrey has called attention to the fact that there are not always 

 two hydrocladia to an internode, as stated by Nutting. Very often 

 there is but one and in some instances I have found a short internode 



