Geil. II. Campanularia 



er forlioklsvis svagt represeiiteret i Norclli.-Exp.'s Materiale, 

 idet der kun tindes en enkel liden Art voxende jjaa Ko- 

 lonier af andre Hydroider, nemlig Caiiipamdaria volu- 

 l)i]i.<!. Lin. 



Campanularia volubilis, Lin. 



Trophosome. Hydrdcaulus enkel, ugrenet, udgaar 

 fra en kryliende Hydrorliiza; den er lost spiraldreiet med 

 en tydelig Ring lige nnder Hydrothckerne. Disse har 

 iiæsten Cylinderform, smalner hurtig af nederst, og har i 

 Randen ca. 10 afrundede Tænder. Hydrothekernes Længde 

 er omtrent dobbelt saa stor som deres storste Bredde. 



Gonosome. Gonangier tlaskeforniige med lang Hals, 

 staar ved en kort Stilk iæstet til den krybende Stolo. 

 Gonoforer er fastsiddende. 



Denne Art er fundet især paa Arter af Slægten 

 HaJeciuin, saaledes paa H. murkatum og H. irregnlare, 

 iiieu ogsaa i Mængde paa Sekiffinojjsis ohsoJeta fra St. 322. 



Gen. III. Campanulina 



omfatter saadanne Campanularider, hvis Hydi'otheker lukkes 

 med et Laag. 



Campanulina plicatilis, M. Sårs. 



Trophosome. Hydrocaulus samraensat, opret, fjær- til 

 vifteformig forgrenet i et Plan. Hydrorhiza en sauimen- 

 filtret Masse forgrenede Ror. Hydrotheker lange, rorfor- 

 mig l)oiede, med Konvexitet opad, lukkes ved at den øverste 

 Del foldes sammen fra begge Sider mod Diameteren. 



Gonosome. Gonangier, store cylindriske med cirkel- 

 rund Aabning i den distale Ende findes spredt over Kolo- 

 nien. Yæggen beklædt med et chitinost Netværk, dannet 

 af Udlobere fra Grenene. 



Denne Art, som tidligere er fundet ved Norges og 

 Grønlands Kyster og indgaaende beskrevet af M. Sårs og 

 Levinsen, blev under Nordh.-Exp. fundet paa tre forskjel- 

 lige Stationer. Jeg har ikke havt Anledning til at iagt- 

 tage Gonangierne, og ovenstaaende Beskrivelse af dem er 

 givet af M. Sårs, der dog ogsaa kun havde betragtet dem 

 paa Siiiritusexemplarer. 



Findested. 18, 312 og 357. 



Campanulina producta, G. 0. Sårs. 

 Trophosome. Hydrorhiza krybende, ingen opret 

 Stamme; Hydrotheker vider sig svagt ud mod distale Ende 

 og lukkes ved at den øverste hindeagtige Del foldes radiært 

 sammen mod Midten: fuldstændig jevn Overgang til Stilken, 

 der er betydelig længer end Hydrotliekerne, og paa hvilken 

 ofte sees nogle faa, utydelige Ringe. 



Den !-,oi-skc Nordliavsexpedition. Kristine Bonnevie: Hydroida. 



Gen. II. Campanularia. 



This genus is eomparatively poorly represented in the 

 N. Atlan. Exp. collection, there being only ono small 

 species, growing on colonies of other hydroids, viz. Cam- 

 panularia voluhill.s, JAn. 



Campanularia volubilis, Lin. 



Trophosome. Hydrocaulus sinii)le, unramified, issu- 

 ing from a creeping hydrorhiza; it is twisted in a loose 

 spiral, witli a distinct ring just below the hydrothecæ. Tiu' 

 latter are almost cylindrical, taper rajjidly below, and have 

 about 10 rounded teeth on their margin. The length of 

 the hydrothecæ is about twice their greatest breadth. 



Gonosome. Gonangia l^ottle-shaped, with long necks; 

 stand on short stalks attached to the creeping stolon. Gono- 

 phores sessile. 



This species is found especially on species of the 

 genus Hulecinni, such as H. vmricatum and H. irregulare, 

 but also in large number on Selaginopsis ohsolefa from 

 Station 322. 



Gen. II J. Campanulina 



will embrace such Campanularidae as have their hydro- 

 thecae furnished •with a lid. 



Campanulina plicatilis, M. Sårs. 



Trophosome. Hydrocaulus compound, erect; penni- 

 form to flabelliform ramification in one plane. Hydrorhiza 

 a tangled mass of branching tubes. Hydrotheca long, tubu- 

 lar, curved, the convex side ujjpermost. is closed by the 

 folding together of the upper thin part from both sides 

 towards the diameter. 



Gonosome. Gonangia largo, cylindrical with circular 

 opening at the distal end; are found scattered over the 

 colony. The wall is covered with a chitinous uet-work 

 formed by shoots from the branches. 



This species, which was previously found on the 

 coasts of Norway aud Greenland, and was minutely de- 

 scribed by M. Sårs and Levinsen, was found at three dif- 

 ferent stations during the N. Atlan. Exp. I have had no 

 opportunity of examiniug the gonangia, and the above de- 

 scription of them was given by M. Sårs, who also, howe- 

 ver, had only seen them in spirit sjjecimens. 



Loeality. Stations 18, 312 & 357. 



Campanulina producta, G. O. Sårs. 

 Trophosome. Hydrorhiza creeping, no erect stem. 

 The hydrothec;e expand slightly towards their distal end. 

 and are closed by the folding together towards the ceutre 

 of the upper, membranous portion; perfectly even transition 

 to the stalk. which is uonsidei-ably longer than the hydro- 

 thecæ, and upon wliich a few indistinct rings nuiy ofteii 

 be seen. 



10 



