158 



HYDRO1DA II 



Campanularia groenlandica is a circumpolar arctic species belonging to the littoral region. It 

 is undoubtedly of more common occurrence than the data to hand appear to show; this is probably 

 owing to its having been confused with Campanularia Hincksii Alder, the prismatic hydrothecae of 

 which present a certain likeness to those of Campanularia groenlandica. That such confusion has taken 

 place as far as the Norwegian waters are concerned would seem to be beyond doubt; we find here, 

 that Campanularia groenlandica moves southward at any rate as far as Trondhjem Fjord (fig. LXXXII). 

 The species has once or twice been encountered off the east and west coasts of Iceland; on the east 

 coast of Greenland it has not been met with south of 76, but along the whole of the west coast, 

 which is its classical ground, it is fairly common, occurring often in company with Campanularia 

 volubilis. 



Zoom. _ 6 00 m. ._ looom. . 2000 m. 



Fig. LXXXII. Finds of Campanularia groenlandica in "the Northern Atlantic. 



Campanularia speciosa Clark. 



1876 Campanularia spectosa, Clark, Report on the Hydroids .... Alaska, p. 214, pi. 9, fig. u. 

 1913 Campamilaria magnifica, Fraser, Hydroids from Vancouver Island and Nova Scotia, p. 164, pi. 



n, figs. 1-3. 



Creeping colonies, from the stolons of which proceed shorter or longer, irregularly wrinkled 

 or ringed stalks, terminating under the hydrotheca itself in a ball-shaped joint The large hydrothecse 

 are swollen at the bottom, with gently curving sides, narrowing upwards, but rapidly expanding again 

 distally near the aperture, so that the opening margin curves strongly outwards. The margin is 



