HYDROIDS OF EASTERN CAN-ADA 



153 



aa Stem branched but not fascicled 



c Hydrothecal margin entire. 



d Diameter of hydrotheca as great as its depth. C. flexuosa. 



dd Diameter of hydrotheca much less than its depth. C. amphora. 



cc , Hydrothecal margin with teeth having two cusps. C. neglecta. 



aaa Stem unbranched or but slightly branched. 



e Hydrothecal margin entire. C. Integra. 



ee Hydrothecal margin toothed. 



/ Hydrothecse with vertical lines. 



g Lines very distinct throughout the whole length. 



h Gonangia annulated. C. hincksi. 



hh Gonangia smooth. C. grcenlandica. 



gg Lines distinct towards margin only. 



i Gonangia long, with bottle neck. C. magnifica. 



ii Gonangia bowl-shaped. C speciosa. 



fj Hydrothecse without vertical lines. 



;' HydrotheciP small, tubular, with blunt, 



shallow teeth. C. volubilis. 



ji Hydrotheca? large, broadening towards 



the margin, teeth blunt, deep. C. gigantea. 



Campanularia amphora (Agassiz). 



Trophosome. Colony loosely branched, height 15 cm.; annula- 

 tions at the base of the branches and above the origin of the branches 

 on the main stem ; pedicels unusually annulated throughout ; hydro- 

 thecsB deeper than wide; margin entire. 



Gonosome. Female gonangia elongate-oval, about four times as 

 long as the hydrothecre, somewhat truncate at top, aperture small ; 

 male gooiang^'a more slender with a slightly produced neck. 



Campanularia flexuosa (Hincks) 



Trophosome. Stem flexuous, 3cm. high; pinnately 

 branched; annxdated at the base and above the origin 

 of the pedicels; pedicels annulated throughout; hydro- 

 thecse as broad as deep, margin entire. 



Gonosome. Gonophores axillary, on annulated 

 pedicels; gonangia large, elongate, ovoid but truncated 

 distally. 



No. 27. 

 Campanularia flexuosa. 



