In all 43 species of polychaetous Annelids have been brought home 

 by the Danmark Expedition. Of these the great majority consist 

 of the ordinary arctic, coastal forms and give the well-known picture 

 of the fauna, which is claracterized chiefly by such species as Har- 

 mothoe imbricata and nodosa, Nijchia cirrosa, Flabelligera affinis, Pec- 

 tinaria hyperborea, Thelepus circinnatus etc. — Further, from a few 

 localities in deeper water the Danmark has brought home on the 

 one hand some less known and rarer forms, e. g. Harmothoe muld- 

 setosa Moore and Trophonia hirsuta G. Ar. Hansen, on the other hand 

 a single new species of the genus Harmothoe. 



Among the commoner forms interest is attached to the species 

 Nereis zonata, which occurs in large numbers, some of the individuals 

 in the epitokous form, and also to Scalibregma inflatum, of which the 

 variety corethrura set up by Michaelsen is present in quantities. It 

 appears on examination, as also from some notes by the zoologist 

 of the Expedition in the Journal of the Danmark, that the form in 

 question is not a variety, but must be the hitherto unknown, epitok- 

 ous form of Scalibregma inflatum. 



