IIYDROIDA II 



135 



would seem to be exclusi\'el\- due to coufusiou with Cainpiniiihiria Johustoni Alder (cf. Bvoch 1912 p. 

 51). The species belougs chiefly to the littoral regiou, especially its ui)])er half, but may quite excep- 

 tioualh' peuetrate some wa\- dowu into the ab\-ssal. Within the waters investigated, Campanularia 

 vo/iibilis is one of the most common Caiiipa)nilariid<r\ it is but rareh' 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 (Treenland waters, but on the east 



200/71. -__._ boom. _._._....«(ooom. 2ooom 



Fig. LXXX. The distribution of Campanu/aiia volubilis 111 the Northern Atlantic. 



In the hatched region,s a couinion although scattered occurrence is stated. ' 



coast of Greenland it has only been met with north of 76°. Of the Iceland coasts, it seems to prefer 

 the east 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 Serhtlaria verticillata, Linne, Systema natur:e, Ed. 10, p. 811. 

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

 nee. 1907 Cainpauularia verticillata. Hickson and GraveU-, National Antarctic Expedition, p. 23. 



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

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

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

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



