58 



Halecium beanii, Jolmst 



Trophosome. Hydrorauliis samnu-nsat, af nu Byg- 

 ning. Forgrening ikke meget sterk og tuldstændig uregel- 

 niæssig. Ingen Einge paa (Trene eller Hydrotheker. Disse 

 er i-ørformige nden udboiet kant. 



Gonosome. Gon;ingier sidder ved Basis af Hydro- 

 thekerne. Hau: Lange, spindelformige. Hun: Store, 

 ovale, tilspidsede mod jtroximale Ende. har en kort rorforniig 

 Aabning (med, Hydranthpar) paa 8iden af distale Halvdel. 



Findested. Et enkelt lidet Exemplar (Han) af denne 

 Art lilev funden paa Station 1 U. 



Halecium irregulare. n. sp. 



(Tal). V, Fig. 1). 



Trophosome. Hydrocaulus sammensat, sterkt og 

 uregelmæssig forgrenet. Stamme og storre Grene meget 

 tykke, morkfarvede og tæt besatte med smaa, lyse hydro- 

 thekbærende Grene. Einge kan forekomme over Grenenes 

 Led og ved Basis af Hyclrothekeiuie. Disse er alternerende 

 stillet ved Leddenes distale Ender og i Planer, der danner 

 ca. 90" med hverandre: deres Form varierer, — snart er 

 Kanten lulbøiet, men som Eegel er dette ilcke TiltVeldet. 

 Hydranth med ea. 24 Tentakler. 



Gonosome. Ukjendt. 



Denne Art minder ved sin tykke Stamme og sin 

 umaadelig tætte Forgrening om Eudendriiim nnnulutum 

 Norman, men overgaar denne i Størrelse. Dens Hydrothe- 

 ker viser en Tendens til uniserial Anordning, idet deres 

 Planer danner en Vinkel med hinanden kun paa 90". 

 Hvad der ellers isa^' udmerker Arten er den uregelniressige 

 Bygning, baade hvad Forgreningen angaar og især med 

 Hensyn til de hydrothekbærende Grenes Bygning. Disse 

 kan paa sine Steder findes aldeles uden Ringe, andre Stedei- 

 sees en eller to over hvert Led, medens Hydrothekerue 

 er fuldstændig glatte, atter andre Steder har ogsaa disse 

 Ringe ved sin Basis o. s. v. 



Kolonien fandtes tæt bevoxet med Campaiuilaria vo- 

 ll ih His. 



Fiudested. Ukjendt. 



Fain. Campanularidae. 



Hi/drmifJier sphulelfonnige. med traadforniige Ten- 

 ialder i en liæl-ke. Hydrofheler rør- til hægerfonnige, med 

 eller uden Laag, lan opfage liele HydrantJien. 



Levinsen og Schneider har begge revideret denne 

 Families Systematik; men da de gaar ud fra forskjellige 

 Synspunkter, er deres Resultater ogsaa høist forskjellige. 



Levinsen opstiller to Familier, Campanularidae, for 

 Arter, der har aabne Hydrotheker og Canvpanulinidae for 



Halecium beanii, Johnst. 



Trophosome. Hydrocaulus compound, of dehcate 

 structure. Ramification slight and quite irregular. No 

 rings on the branches or hydrothecae. The latter are 

 tubular, uitli no outward-curving edge. 



Gonosome. The gonangia are situated at the base 

 of the hydrothecæ. Male — long, spindle-shaped; feinale 

 — large, oval, pointed at the proximal end, having a short 

 tubular opening (with a pair oi hydranths) on the side of 

 the distal half 



Loeality. A single little specimen (malel of this 

 species was found at Station 10. 



Halecium irregulare, u. sp. 



(Pl. v, fig. 1). 



Trophosome. Hydrocaulus compound, greatly and 

 irregularly ramitied. Stem and larger branches very thick, 

 of a dark colour, and thickly covered with light-coloured 

 branchlets bearing hydrothec:e. The latter are placed 

 alternately at the distal end of the joints, and in planes 

 forming an angle of about 90" with one anolhei-. Tlieir 

 form varies, the edge sometimes curving outwards, hut not 

 as a rule. Hydranth with about 24 tentacles. 



Gonosome. Unknown 



This species, on aci'ount of its thick stem and ex- 

 tremely al)undant i-amitication, recalls Eudcndrium annu- 

 hduni Norman, but exceeds it in size. Its hydrotheca- 

 exhiljit a tendency to uniserial arrangement, their planes 

 forming an angle of only 90" with one another. What 

 espccially distinguishes the species in other respects is its 

 irregular structure as regards ramification, and more par- 

 ticularly as regards the hydrotheca-bearing In-anches. These, 

 in somc! i)laces, are entirely without rings: in others, with 

 one or two rings above each joint, while the hydrotheca^ 

 are quite smooth. In others again, the hydrotheca have 

 also rings at their base, etc. 



The colony was found thickly overgrown with Cani- 

 pmudaria rnluhilis. 



Loeality. Unkncjwn. 



Fani. Campanularidae. 



Hydranths spindle-sJiaped with filiform tentacles in a 

 row. HgdiotJieca tidndar- to aip-sliapvd, u-ith or irifliout lid: 

 can enclosc the ivhole hydratdh. 



Levinsen and Schneider have both revised the syste- 

 matisation of the family; but as they take different startiug- 

 points, the results they arrive at are very different. 



Levinsen establishes two families Campianularidæ, for 

 species with open hydrothecæ, and Canipanidinidæ, for 



