166 THE ROYAL SOCIETY OF CANADA 



secondary branches arranged in a regular manner, and the pedicels 

 are arranged pinnately on these; hydrophores tubular, with rim very 

 little everted if at all. 



Gonosome. — Gonangia borne in rows on the upper side of the 

 branchlets; female gradually broadening distally, main portion trun- 

 cated but one side projecting in the form of a small tube, through the 

 aperture of which pass two hydranths; male gonangia oblong, tapering 

 slightly toward the base. 



Distribution. — Puget Sound (Nutting) ; Ucluelet (Fraser) ; Swift- 

 sure Shoal. 



Halecium kofoidi Torrey 

 PI. XX, Fig. 73 



Halecium kofoidi Torrey, Hyd. of the Pacific Coast, 1902, p. 49. 

 Halecium kofoidi Fraser, West Coast Hydroids, 191 1, p. 47. 



Trophosome. — "Colony with a thick trunk from which branches 

 arise irregularly, forming a sparse tuft 1^ inches high. The branches 

 may branch again; from these secondaries the ultimate branches 

 grow, alternating regularly on each side of the branch. All branches 

 are divided into internodes of approximately equal length. Each 

 internode usually bears on its shoulder at its distal end a sessile 

 hydrotheca which does not reach beyond the distal end of the inter- 

 node. Within this hydrotheca another may arise on a short stalk, 

 and within the latter, still another on a similar stalk. These stalks 

 are somewhat constricted at the base, and bend away slightly from 

 the stem. Occasionally a stalked hydrotheca arises directly from 

 the internode without the interposition of a sessile hydrotheca. There 

 may be one or two wavy annulations at its base. Secondary and 

 ultimate branches arise from the bases of hydrothecae. The wall of 

 the hydrotheca is especially thickened, the interior contour in profile 

 being convex, while the outer one is straight. There is a circle of 

 bosses of variable number and arrangement around the inner surface 

 of the wall". (Torrey). 



Gonosome. — "Male gonothecse present. When mature they are 

 long, oval, smooth, three to four times as long as broad, each attached 

 below a hydrotheca by a short pedicel, which may have one or two 

 faint annulations. The base of the gonotheca may have a wavy 

 outline. Small terminal aperture. 



Color of stem and base of branches brown". (Torrey). 



Distribution. — San Juan Archipelago. (Fraser). 



I have no specimens of this species at hand now hence I have 

 given Torrey's original description and his ligures. 



