S AXEL OHLIN, ARCTir CRUSTACEA. 



(Kröyek), E. f/racilis G. O. Särs, Diastylis Goodsiri (Bell), 

 D. Rathlxii (Kröyer), D. spinulosa Heller, D. Edivanldi 

 Kröyer, sixteen in all, besides the Wo mentioned by Vosseler. 

 It is remarkalde that neither CJiindothen Sahini nor Ch. 

 entomon has as vet been obtained in these seas, whereas 

 they are so common in the adjacent parts of that shallow 

 sea as the Barents-, the Kära-, and the Siberian Polar Sea. 

 Possibly the3^ liave been found by the other expeditions. 



En passant, 1 use the opportunity of calling attention 

 to a fact already pointed out by Kukenthal and Walther 

 and, lately, by Schaudinn and Römer, viz. the richness in 

 these cold waters both of species and individnals unsnrpassed 

 on the West coast of Spitzbergen or in any other Arctic sea 

 \dsited by me. Especially »the Bremer Sonnd» where a rather 

 strong cnrrent is prevailing, and some other stations among 

 King Charles Islands, were very profitable for the dredging 

 zoologist. Generally, the species collected here were of a 

 greater size and of a more luxnriant appearance than at 

 other places and, especially, at the Norwegian coast. 



During the short trip to the Swedish Depth», the following 

 species some of which were already obtained during the 

 Norwegian North Atlantic Expedition 1876 — 78, were trawled: 

 Gnatltia styyia (G. O. Särs), Chiridothea mcgälura G. O. Särs, 

 Eurycopv Hanseni n. sp., and Diastylis polaris G. O. Särs. 



To show the often very striking difference in size between 

 trne Arctic species I have generally measured niy largest 

 specimen and compared with specimens from Norway, the 

 size of which are to be found in Sars' works. Also, I have 

 as a rule mentioned the vertical distriliution in the Arctic 

 ocean and in more southern seas. 



In the next year I expect to continue this list of Arctic 

 crustaceans with the Decapoda, Schizopoda, and Amphipoda. 



I use this opportunitj' to bring my best thanks to Dr. 

 H. J. Hansen. of Copenhagen, for the kind interest with 

 which he has followed my carcinological studies both in 

 lending me duplicate specimens for comparison and in giving 

 me many valuable advices. 



