154 



HYDROIDA II 



large, about twice as long as broad; they are very nearly cylindrical, or somewhat tumid in the 

 lower third, and with a very slightly expanded opening section; the basal third or fourth part 

 of the hydrotheca tapers down, after an evenly curved transition part, rapidly to the stalk. The basal 

 cavity of the hydrotheca is small, separated off from the main chamber by a narrow, but as a rule 

 fairly prominent ring-shaped thickening of the inner wall. The transverse section of the hydrotheca 

 at the aperture is circular, the opening margin has from nine to thirteen low, but generally di- 

 stinct, rounded teeth. 



The gonothecas proceed from the stolons. They are oval to bottle-shaped, with a very short, 

 often ringed stalk, in the broad end, and a long and narrow, cylindrical distal neck. Thegonotheca 

 is smooth, often slightly asymmetrical, rarely with curved neck. 



Material : 



"Ingolf" St. 33 6 7 57' N., 55=30' W, depth 35 fathoms, 0,8 



86 6 5 o 3 ,6' N, 2 3 47,6' W, 76 



- 87 6 5 02,3' N., 23 5 6,2' W., - no 

 "Thor", 6552' N., 2358' W., depth 62 metres. 

 64i6' N., 22i7' W., 50 



6 4 o 2 ' N., 22 33' W, 34 



Greenland: Kutdlisat, Disco (depth not stated) 



Proven ( ) [labelled Clytia Johnstoni] 



Store Hellefiskebanke, off Holstensborg, depth 18 20 fathoms 

 Lille Hellefiskebanke (without further details) 

 Sukkertoppen, on Boltcnia (depth not stated) 

 Frederikshaab ( ) 



Iceland: Seydisfjord, depth 6 fathoms 

 Vestmano, 25 

 Hvalfjord, 22 

 Bredebugt, 65i7,5' N., 2322' W., depth 712 fathoms 



6 4 45,8' N, 23 55,2' W., depth 30 

 Stykkisholm, 20 30 



6 miles W. of Iceland, (without further details) [some of them labelled Cainpanularia- 



Johnstoni] 



Patreksfjord, depth 1550 fathoms 

 Off Dyrafjord, depth 30 fathoms. 

 The Faroe Islands: 6 miles N. by W. of Store Kalso, depth 60 fathoms 



7 miles N. by E. of Myggenses point, depth 57 fathoms 

 Deep hole at north point of Nolso, depth 100 fathoms. 



Campanularia volubilis is a circumpolar boreal species, with a very wide distribution in the 

 arctic areas; it would perhaps be more correct to describe it as an arctic-boreal species. It does not 

 penetrate very far into the warmer waters, and the records as to its occurrence in the Mediterranean 



