HYDROIDA 



63 



Text-fig. U. The distribution of Etn/nidnum capilLiic in the Nortliern Athiutic. 

 (The hatched coastal region indicates a scattered occurence according to the Htterature). 



being borne by diminutive polyps. It accordingly appears that the fertile poljps of the species are 

 not always wholly atrophied, as has hitherto been generally supposed. 



The distribution of EmioidriiDii capillarc is extremely wide, almost quite cosmopolitan. It very 

 frequently occurs in the northern seas (Text-fig. U); however, already in the Norwegian vSea and 

 along the west coast of Norway its occurence becomes less frequent, and it does not penetrate very 

 far into the Arctic regions. The species belongs to the middle parts of the littoral region. 



