HYDROIDA II 



J 55 



would seem to be exclusively due to confusion with Campanularia Johnstoni Alder (cf. Broch 1912 p. 

 51). The species belongs chiefly to the littoral region, especially its upper half, but may cprite excep- 

 tionally penetrate some way down into the abyssal. Within the waters investigated, Campanularia 

 volubilis is one of the most common Campanula riida\ it is but rarely found, however, out in the open 

 sea regions, which must probably be understood as standing in connection with its bathymetrical 

 character (fig. LXXX). The species is not uncommon in West Greenland waters, but on the east 



2oo m. 600 m. ... looom. 2000 m. 



Fig. LXXX. The distribution of ( 'ampanularia volubilis m the Northern Atlantic. 

 In the hatched regions a common although scattered occurrence is stated. 



coast of Greenland it has only be«n met with north of 76 . Of the Iceland coasts, it seems to prefer 

 the feast and west; it is less frequent at the Faroe Islands, and is stated as being of common, though 

 scattered occurrence round the British Isles and off the west coast of Norway. 



Campanularia verticillata (Linne) Lamarck. 

 1758 Sertularia verticillata, Linne, Systema naturae, Ed. 10, p. 811. 

 1816 Campanularia verticillata, Lamarck, Histoire uaturelle, vol. 2, p. 113. 

 nee. 1907 Campanularia verticillata, Hicksou and Gravely, National Antarctic Expedition, p. 23. 



Upright, stiffly built rhizocaulomes, from the numerous tubes of which the hydrotheca stalks 

 proceed, arranged approximately in wreaths. The stalks exhibit distinct rings, which are most pronoun- 

 ced near the origin, and nearer the hydrotheca; the stalk always terminates under the hydrotheca in 

 a ball-shaped joint; the middle of the stalk is generally smooth. The hydrotheca is about twice as 



