Report on the Hydroids. 389 



Campanularia intégra Markt.-Turn. 1895 [43] p. 406. Taf. 11, Fig. 



7 II. 8. 

 „ „ Schydlowsky 1901 [52] „ 126. 



Clytia caliculata Nutting 1901 [45] „ 170. PI. XVII, 



figs. 1, 2. 

 Campanularia Ritteri ,, „ „ „ 171. PI. XVII, fig. 5. 



„ intégra Sæmundsson 1902 [54] ,, 55. Tab. I, Fig. 1 — 2. 



„ „ Jcäderholm 1909 [35] „ 65. Taf.VI,Fig.4— 9. 



„ „ Broch 1909 [17] „ 185 & 225. Textfig. 



38 a, 40. 



In great abundance at several stations, forming large, dense 

 growths, especially on Delesseria, more rarely on hydroids. 



The specimens are almost exclusively the thin-walled form {forma 

 iijpica), with both bell-shaped and funnel-shaped hydrothecae. Between 

 a number of thin-walled hydrothecae on a leaf of Delesseria (St. 66) 

 one hydrotheca was found with the form typical of forma cahjciilata 

 as also one hydrotheca which showed a transition point. The stalks 

 of the hydrothecae are usually but slightly twisted above and below; 

 but not rarely the pedicels are strongly twisted in the whole of their 

 length, most frequently at St. 66. As a rule the pedicel is many 

 times longer than the hydrotheca, but I have also seen pedicels 

 which were only 14 -2 times as long as the hydrotheca. I have seen 

 8 examples of abnormal hydrothecal renovation, a complete hydro- 

 theca on a short (sometimes very short) stalk free inside another 

 hydrotheca (fig. in Levinsen (37)); 7 of these examples are from 

 St. 66. A figure similar to Levinsen's is given by Mereschkowsky (44); 

 he regards the condition as an example of incomplete division, 

 which points to the condition in the athecate hydroids, which 

 according to M. are articulate or metamerous; the incomplete division 

 is said to have been discovered by Agassiz (Contributions to the 

 Nat. Hist, of U. S., IV). — 



Renovation up to 3 times. 



Gonosomes of very frequent occurrence. 



Hab.: St. 21, 36, 63, 66, 68 a, 69, 71 a, 72 b, 72 c, 95 a, X, 96. 



Depth: 6— 180 m., most frequent at 20— 40 m . 



Geographical distribution: Arctic: circumpolar. — Cos- 

 mopolitan. 



Not earlier known from East Greenland. 



Campanularia Tolubilis (Linné) Alder. 

 Sertularia volubilis Linné [40]. 



uniflora Pallas 1766 [47] p. 121. 

 Campanularia volubilis Alder 1856 [1] „ 125. PI. IV, fig. 7. 



28* 



