HYDROIDS OF EASTERN CANADA 

 Genus Cryptolaria. 



167 



Trophosome. Stem strongly fascicled; portion of branches simple; hydrothecse 

 on the stem more or less immersed, everywhere partly adherent. 

 Gonosome. A coppinia mass. « 



Cryplolaria tris-rkiUs Fraser. 



Trophosome. Stem fascicled, very coarse; hydro- 

 thecae on the stem few in number, appearing singly or 

 in opposite or sub-opposite pairs, the distal half free, 

 curves outward; on the simple portion of the branches 

 the hydrothccaj are arranged in three series. 



Gonosome. Unknown. 



No. 70. 

 Cryplolaria triseiHalis. 



Genus FiLELLUM. 



Trophosome. A creeping stem gives rise to partly adlierent hydrothecae, the free 

 portion curved upward. 



Gonosome. A coppinia mass. 



Filellum serpens (Hassell). 



Trophosome. Stolon reticular; hydrothecae ad- 

 herent from one-half to two-thirds of their length, 

 nearly the same size throughout, not annulated but 

 sometimes transversely striated. 



Gonosome. Coppinia mass compact ; gonangia not 

 so closely placed as in some other species ; hydrothecal 

 rubes long and slender. 



Genus Grammaria. 



No. 71. 

 Filellum serpens. 



Trophosome. Stem fascicled, consisting of a hydrothecate axial tube surrounded 

 by a number of peripheral non-hydrothecate tubes; hydrothecfe partly adherent. 

 Gonosome. A coppinia mass. 



KEY TO SPECIES. 



a Portion of hydrotheca not immersed, curved outward. 

 h Portion of hydrotheca not immersed, curved inward. 



G. ahietina. 

 C. gracilis. 



