Xn this paper I am going to continue with the enumeration 

 and description of Arctic Crustaceans collected mainly on 

 Professor A. Gr. NATnoRST's expeditions in the years 1898 and 

 1899 to Spitzbergen and East Greenland resp. In my pre- 

 vious paj)er^ I have given some information as to the pnrpose 

 of, and the zoological work done during those voyages, therefore 

 I think it unnecessary here to reiterate it. Bnt, besides the 

 material collected during those trips, I had at my disposal 

 the rather large collection of crustaceans obtained during the 

 Swedish Zoological Arctic Expedition of 1900 under the direc- 

 tion af Mr. G. Kolthoff, of the University of Upsala. This 

 eminent ornithologist equipped an expedition to Spitzbergen, 

 Jan Mayen, and East Greenland, mainly for the purpose of 

 niaking collections of vertebrates and of studying their bi- 

 ology. But the other branches of zoological seience were not 

 neglected by this zealous naturalist. He, therefore, engaged, 

 to study the marine fauna, Mr. Hj. Östergren, M. A., who 

 has contributed by his valuable papers to an increased know- 

 ledge of the Holothurians, and Mr. Th. Odhner, B. A., who 

 acted as his assistant. These gentlemen dredged and trawled 

 at no less than 30 stations, most of them, viz. stat. 16 — 28, 

 situated ofF East Greenland, mainly in the neighbourhood af 

 Franz .Joseph's Fiord. Stations 1 — 12 are situated oiF the 

 west coast of Spitzbergen, 13 — 14 off Jan Mayen, and 29 — 30 

 in the deep basin between East Greenland and Jan Mayen. 

 Some interesting deep-sea crustaceans were also obtained 

 by means of the vertical towing-net from depths up to 3000 

 meters. 



When the collections of Mr. Kolthoff's expedition were 

 handed to me, most of the decapods were already determined 

 by Dr. E. Lönnberg, of the University of Upsala. Therefore 

 it is only a few of the more interesting of these forms which 

 I have myself examined. Those determined by Mr. Lönnberg 



This journal, Bd. 26 (1900), Afd. IV, n:o 12. Printed 1901. 



