HYDROIDA II 



often curving slightly outward. The basal chamber is well developed, and bounded at the top by a 

 more or less pronounced ring-shaped thickening of the wall, often with a fairly thick base. 



The gonothecse are attached to the stolons by a short, generally rudimentary stalk. They are 

 oblong oval to cylindrical; the wall is often furnished with oblique furrows forming a spiral, but may 

 as often as not be quite smooth; all intermediate forms and types occur in one and the same colony. 

 The gonophores are eumedusoid and sessile, or break loose during a part of the breeding season as 

 defective medusae (Agastra}. 



Material : 



"Ingolf" St. 34, 65!? N., 54i7 r W.; depth 55 fathoms 



- 127, 66 33 ' N, 2 oo 5 ' W.; 44 4,6 



"Thor" 64oa' N., 2233' W.; 34 metres 



Greenland: Godhavn (depth not stated) 



Jakobshavn ( ) 



Egedesminde ( ) 



Store Hellefiskebaiike, off Holstensborg (depth not stated) 

 Davis Strait, depth 100 fathoms (without further details) 

 Sukkertoppen on algse. (depth not stated) 

 Godthaab ( ) 



Iceland: Bakkefjord, depth 10 fathoms 

 Vopnafjord, on littoral algse 

 Seydisfjord, depth 6 fathoms 

 Vestmano, on littoral algse 

 Reykjavik, depth 2 3 fathoms 

 10 miles W. of Akranes, depth 26 fathoYns 

 Keflavik, on littoral algae 

 Bredebugt, 65i7,5' N., 2332' W., depth 712 fathoms 



6 5 i8, 5 ' N, 2 3 02' W, 9-12 



Stykkisholm 30 



The Faroe Islands: Svino, on laminarians, depth 60 fathoms. 



The synonymy of this species should be clear enough after the investigations which have been 

 made by L,evinsen (1893) Kramp (1911) and myself (1909); nevertheless we find, that Nutting 

 (1915) again distributes the species among no fewer than four, and even places these in two different 

 genera. With regard to the transition stages between Campanularia Integra and Orthopyxis caliculata, 

 we find the following (1915 p. 34) "Broch . . . says that the gonangia of the two species intergrade, but 

 I have seen no instance of the kind, and, as the two may occur together, a very careful dissection 

 would be necessary to place the matter beyond doubt". It is precisely such careful dissections which 

 have convinced Levinsen and myself- that all transition forms and variants do occur on the same 

 stolons; we have only to regret that Nutting has not been equally conscientious in his methods 

 of work. 



