16 



Fain. Tubularidæ. 



Hjjdranther sterkt udvidet i den proximale Del. 



TentaUer siillede i to skarpt adskilte Kredse, en Proximal 



oq en Disfal. Gonosome luellem de to Kredse. 



Fani. Tubularidæ. 



Hydranths greathj expanded in tlieir proximal part. 

 Tentacles arranged in 2 sharphj defined circles, one proxi- 

 mal and one distal. Gouosonie heticeen the two circles. 



Denne Familie udmerker sig ved sin Eigdoni paa 

 store og prægtige Arter, der ofte er vanskelige at skjelne 

 fra hinanden, hvis man kun har Hydranthens Bygning at 

 dømme efter. Men medens de forskjellige Arters ti-opho- 

 sonie viser en ualmindelig Overensstemmelse i sin Bygning, 

 saa er det modsatte Tilfældet med Gonosomerne, og man 

 kan her bedre end i nogen anden Familie paavise alle 

 forskjellige Overgangstrin mellem de fastsiddende og kun 



This family is remarkable for the alnindance of large, 

 splendid species that it contains. often difticult to distin- 

 guish from one another, if the structure of the hydranths 

 is the only thing to judge by. But Avhilo tlie trophosonie 

 of the various species exhibits an unusual similarity in 

 structure, it is the reverse with the gonosomes; and all 

 the different ti-ansitional stages between the fixed and but 

 slightly developed gonophores. and the freeswimming medusa 



