Vou. 2] Torrey —Hydroids of the San Diego Region. ital 
Distribution. Coronado Is., Mexico (July, 1903), and Coro- 
nado, Cal. (July, 1901). Growing on seaweed. 
10. Halecium kofoidi. 
Halecium kofoidi, Torrey, 1902, p. 49, pl. 3, figs. 32, 33. 
Trophosome. Stems rising from creeping hydrorhiza, branching 
irregularly; largest colonies with thick trunk may reach 5 mm. in height. 
Branches arise just below hydrothecae; divided obliquely into internodes 
of approximately equal length. Hach internode usually bears on a distal 
shoulder process a sessile hydcotheca which does not reach beyond the 
distal node. Within this hydrotheca another may arise, and another within 
the latter, both on short stalks somewhat constricted at the base and bent 
slightly away from the stem. Hydrothecal wall especially thick. 
Gonosome. Male gonangia long, oval, smooth, 3 or 4 times as long 
as broad; may be waved proximally; small terminal aperture. 
Distribution. Coronado Is., Mexico (July 25, 1903, on kelp 
at surface); Pt. Loma; mouth of San Diego Bay, 5 fathoms; 
Catalina Is., 42 fathoms. 
11. Halecium washingtoni Nutting. 
Halecum geniculatum, Nutting, 1899, p. 744, pl. 63, fig. 1. 
Halecium washingtom, Nutting, 1901, p. 789. 
HTalecium nuttingi, Torrey, 1902, p. 50. 
Trophosome. Colony fascicled, branching in much the same plane, 
branches approximately alternate; non-fascicled branches more or less regu- 
larly annulated at their bases, with long internodes which are arranged in 
zigzags distally. Hydrothecae at the distal end of each internode, singly 
or in pairs, margins everted. Hydranths with 16 to 24 tentacles. 
Gonosome. ‘‘Gonangia borne singly in the axils of the branches 
and branchlets, regularly ovoid in one view, barnacle-shaped in the other; 
aperture large, terminal’’ (Nutting, 799). 
Distribution. Pt. Loma, July, 1901. Puget Sound (Nut- 
ting). 
Fam. CAMPANULARIIDAE. 
Gen. Campanularia, Lamarck, 1816. 
12. Campanularia edwardsi Nutting. 
Campanularia edwardsi, Nutting, 1901, p. 346, fig. 28. 
Trophosome. ‘‘Colony attaining a height of over an inch, branch- 
ing somewhat irregularly, but with a distinct tendency to send off pedicels 
from the main stem in sub-opposite pairs. Stems, branches and pedicels 
exceedingly long and slender, with the annulation confined to the proximal 
portions, except the few just below the hydrothecae. Hydrothecae very large, 
deeply campanulate, with 12 to 14 exceedingly sharp, slender teeth. 
Hydranth with about 28 tentacles. 
Gonosome. ‘‘Unknown’’ (Nutting). 
