[fraser] HYDROIDS OF THE VANCOUVER ISLAND REGION 173 



Trophosome. — Stolon reticular, creeping over other hydroids, 

 wormtubes etc.; hydrothecae adherent for from one-half to two- 

 thirds of their length ; nearly the same size throughout, not annulated 

 but there may be some horizontal striae near the margin ; margin not 

 flaring. 



Gonosome. — Coppinia mass rather compact, the gonangia not 

 placed so closely together as in other species; hydrothecal tubes long 

 and slender. 



Distribution. — San Juan Archipelago (Fraser) ; Nawhitti Bar, 

 Hammond Bay, Departure Bay, Northumberland Channel, Friday 

 Harbor. 



Genus GRAMMARIA 



Trophosome. — Stem fascicled, consisting of a hydro thecate axial 

 tube surrounded by a certain number of peripheral, non-hydrothecate 

 tubes; hydrothecae partially adherent; no diaphragm in hydrothecal 

 cavity. 



Gonosome. — A Coppinia mass. 



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



A. Large portion of hydrotheca free from the stem G. abietina 



B. Hydrothecae almost wholly immersed G. immersa 



Grammaria abietina (Sars) 



PI. XXII, Fig. 84 



Campanularia abietina Sars, Nyt. Mag. for Naturvid., 1851, p. 139. 

 Grammaria robusta Stimpson, Mar. Inv. of Grand Manan, 1854, p. 9. 

 Grammaria abietina Sars, Norske Hydroider, 1863, p. 34. 

 Salacia abietina Hincks, Br. Hydroid Zoophytes, 1868, p. 212. 

 Lafœa abietina Bonnevie, Norske Nordhavs-Exped., 1899, p. 64. 

 Grammaria abietina Fraser, Hydroids from Nova Scotia, 1913, p. 171. 



Trophosome.— Stem very stout, irregularly branched, branches 

 constricted at the base, resembling a main stem in all particulars; a 

 large portion of the hydrotheca free, the free portion being directed 

 outwards; orifice nearly circular, margin vertical. 



Gonosome. — "Coppinia, generally of an irregular oval form. All 

 the tubes extending radially from it bend at certain distance from the 

 surface in all directions, thus forming a network lying like a capsule 

 outside the cluster of gonangia" (Bonnevie). 



Distribution. — Swiftsure Shoal, Departure Bay, Northumberland 

 Channel, Friday Harbor. 



I have not found the gonosome. The description and the figure 

 are from Bonnevie. 



