CAMPANULARIAE 



111 



Key to the species of Campanularia here described: 



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



&! Margin of aperture of hydrotheca not toothed C. POTEBIUM 



& 2 Margin toothed. 



c x Teeth square at top C. HINCKSI 



c 2 Teeth very shallow, the margin being sinuous C. VOLUBILIS 



c 2 Colony branched. 



6j Colony large, over 10 cm. high. 



d Margin of aperture toothed C. VERTICILLATA 



c 2 Margin of aperture not toothed C. AMPHORA 



6 2 Colony small, under 3 cm. high C. FLEXUOSA 



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

 the end of long, completely annulated stalks, which rise separately from 

 the hydrorhiza; 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, partially 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 



Fig. 184 



Campanu- 

 laria hincksi 

 (Kingsley). 



Fig. 185 Campanularia. 

 flexuosa (Hargitt). 



