CAMPANULARIAE 



111 



Key to the species of Campanularia here described: 



Oi Colony not branched, the hydranths rising separately from hydrorhiza. 



61 Margin of aperture of hydrotheca not toothed C poterium 



62 Margin toothed. 



Ci Teeth square at top C. HINCKSI 



C2 Teeth very shallow, the margin being sinuous C. volubilis 



aj Colony branched. 



61 Colony large, over 10 cm. high. 



Ci Margin of aperture toothed C. verticillata 



C2 Margin of aperture not toothed C. ampiioka 



62 Colony small, under 3 cm. high C. flexuosa 



C. poterium (Agassiz). Colony unb ranched, with the hydranths at 

 the end of Ions:, completely annulated stalks, which rise separately from 

 the hj^drorhiza; aperture of hydrotheca not toothed; 

 hydranth with 24 tentacles; gonangia slender and ovate, 

 rising from the hydrorhiza: Vineyard Sound to Labrador; 

 low -water mark to 30 fathoms, common on seaweed; 

 Europe. 



C. hincksi Alder (Fig. 184). Colony unbranched, the 

 hydranths at the end of long and partially annulated 

 stalks which rise separately from the hydrorhiza; aper- 

 ture of hydrotheca with 12 square-topped teeth; gonangia 

 on short stalks and annulated: from Vineyard Sound to 

 Maine, on stones and shells; southern California; Europe. 

 C. volubilis (L.). Colony unbranched, the hydranths 

 at the end of long completely annulated stalks which rise separately 

 from the hydrorhiza; aperture of hydrotheca with 

 10 shallow-rounded teeth; gonangia rise from the 

 hydrorhiza: from Vineyard Sound to Greenland; 

 low-water mark to 100 fathoms; common; Pacific 

 coast; Europe. 



C. verticillata (L.). Colony branched, attain- 

 ing a height of 12 cm. ; hydrothecae with a toothed 

 aperture borne on long, partiall}" annulated stalks 

 which form whorls around the stem: Long Island 

 Sound to Maine, in 4 to 45 fathoms; Alaska; 

 Europe. 



C. amphora (Agassiz). Colony branched, 

 attaining a height of 15 cm.; hydrothecae with 

 untoothed aperture and with a swollen stalk; 

 hydranth with 30 tentacles ; gonangia truncate : from Long Island Sound 

 to Gulf of St. Lawrence; common. 



C. flexuosa (Hincks) (Fig. 185). Colony 25 mm. high, branched 

 irregularly; stem annulated near the base of the branches; hydrothecae 



Campanu- 

 laria hincksi 

 (Kingsley). 



Fig. 185 — Campanularia 

 flexuosa (Hargitt). 



