102 THE ROYAL SOCIETY OF CANADA 



cium reversum, Abietinaria turgida and Sertidarella albida, from points 

 to the north. The remaining 1 1 are new to the coast. Opercularellalacerata 

 has been reported from Eastern North America, Arctic Regions, 

 Europe and the South Pacific: Eudendrium tenellum, Gonothyrœa 

 gracilis, Halecium labrosum and Grammaria abietina, from Eastern 

 North America, the Arctic Region and Europe: Halecium articulo sum 

 from Eastern North America and Europe: Hybocodon prolifer and 

 Clytia cylindrica from Eastern North America: Garveia grœnlandica 

 from the Arctic Regions: Eudendrium insigne from Europe and 

 Halecium flexile from the South Atlantic. 



These species now reported, supplementing those already reported, 

 show more conclusively than ever that there is no great lack of con- 

 tinuity in the hydroid fauna at any point along the west coast. They 

 also give further indication of the close relationship existing between 

 the forms on this coast, on the east coast of North America, the 

 Arctic regions and Europe. 



Of the families represented in the Vancouver Island Region, the 

 Sertularidœ leads the lists with 60 species but the Campanularidœ 

 comes fairly close with 34. There are 16 of the Halecidœ, 8 of the 

 Campanidinidœ , 7 of the Lafœidœ and of the Plumularidœ, while all 

 the gymnoblastic species number but 24. As indicated in the intro- 

 duction no deep water collecting of any account has been done. Pos- 

 sibly when the fauna of greater depths has been examined there may- 

 be quite a difference in the proportion. Commonly the Sertularidœ 

 maintain an even greater proportion at greater depth. This is indi- 

 cated as compared with the Campanularidœ at least by the proportion 

 the shore forms bear to the whole number collected. Of the 38 species 

 that have been found at the shores at low tide, there are 5 gymno- 

 blastic forms, 16 belonging to the Campanularidœ, 2 to the Campanidi- 

 nidœ, 3 to the Halecidœ, 2 to the Lafœidœ, 7 to the Sertularidœ and 

 3 to the Plumularidœ. 



The species so found were: — Syncoryne mirabilis, Garveia annulât a, 

 Eudendrium californicum, Hydractinia milleri, Tubularia crocea, 

 Campanularia denticulata, Campanularia everta, Campanularia exigua, 

 Campanularia grœnlandica, Campanularia urceolata, Clytia edwardsi, 

 Clytia inconspicua, Clytia johnstoni, Eucopella caliculata, Gonothyrœa 

 clarki, Gonothyrœa gracilis, Obelia dichotoma, Obelia dubia, Obelia 

 gracilis, Obelia longissima, Obelia surcularis, Calycella syringa, Oper- 

 cular ella lacerata, Halecium annulation, Halecium densum, Halecium 

 ivilsoni, Lafœa dumosa, Lafœa gracillima, Abietinaria amphora, Abiet- 

 inaria anguina, Abietinaria filicula, Abietinaria greenei, Sertidarella 

 conica, Sertidarella turgida, Thuiaria dalli, Aglaophenia slruthionidcs, 

 Plumularia lagenifera, Plinnularia setacea. 



