In some bottom material from the "Stormbugt" Dr. Brehm who dealt 

 with the Entomostraca brought home by the "Danmark-Expedi- 

 tion" found several Nematodes which he was kind enough to take 

 out and forward to our Museum. The examination gave the result 

 that all the Nematodes belonged to the same species and that it 

 was a Dorylaimus. 



Of this genus, exceedingly frequent among the land- and fresh- 

 water forms, only one marine species has been described so far as I 

 know, namely a Dorylaimus found by Dujardin at Lorient and 

 described in his "Histoire naturelle des Helminthes ou vers intestinaux, 

 Paris 1845", under the name of Dorylaimus marinus. That the genus 

 however has been taken later in the sea is evident from the Annual 

 report of the Liverpool Marine biology committee by W. A. Herdmann 

 for the year 1912, where among several other marine genera gathered 

 by himself Gilbert E. Johnson also names the Genus Dorylaimus. 

 As this is only a list of the genera the question of species is not at 

 all mentioned. 



As the material from Greenland proved to be in a rather bad 

 state of preservation I picked out some specimens which appeared 

 to be tolerably open to examination, four in all, females. No males 

 were found in the material. 



It soon proved that the species present could not be identical 

 with the Dorylaimus marinus of Dujardin who describes the tail of 

 the named species as: "longue, effilée", while the tail of the species 

 from Greenland is rather short and hook-shaped. The spear of the 

 species from Lorient does not seem to have the usual quill-shape 

 (Duj. 1. c. PI. 3 fig. D 1.) while the spear of the specimen from the 

 Danmark Expedition just has this form. Only one thing more I 

 shall mention: the relation y)etween the length and the breadth is 

 for the species of Dujardin 24, for the Greenland specimen ЗТЧ-з. 



What first was striking in the Greenland specimens was their 

 lack of transparency and their dark olive-green colour. The body 

 is slender and tapers rather quickly towards the front end and 



