BIHANG TILL K. SV. VET.-AKAD. IIANDL HAND 27. AFD. IV. N:0 S. 61 



Arctic Ocean, generally below zero. This cireumstance inclines 

 me to believe that Fandalus borealis ought not to be regarded 

 as a trne Arctic form, but rather as an North Atlantic (and 

 North Pacific) species. In this view I am confirmed by the cir- 

 eumstance that it has not as yet been obtained along the East 

 coast of Greenland, in Smith Sound, or along the West coast 

 of Baffin Land, where the Arctic Current is sweeping south. 



Pandalus horealis: is mostly found in depths varying from 

 100 to 500 m. Whether it lives or not at the very bottom, 

 is an open qnestion. It is, in my opinion, very pro- 

 bable that, perhaps during the most part of its life, like 

 many other decapods and schizopods, it swims in great 

 shoals in the deeper strata of the water, and is only occa- 

 sionally found creeping along the bottom. In proof of this 

 I may mention that I once got, at station 24 in 1898, some 

 large specimens, although the great trawl had capsized, so 

 that trne bottom-animals did not come up. However, the 

 trawl had reached the bottom, inasmuch as there some clay 

 was adhering to it. However, I ne ver got this species in the 

 vertical plankton net, but that must be explained simply by the 

 great swiftness ot this animal, which very easily escapes the 

 relatively small opening of the net. 



As to the colour, I refer to Smith, Stalk-eyed Crusta- 

 ceans of the Atlantic Coast of North America, 1. c. p. H(^. 



Lentjih of one of the largest specimens 122 mm. The 

 largest specimen Hansen measured, reached a length of 

 129 mm. 



Fam, Pasiphaeidae. 



Pasiphaea Savigny 1816. 



23. Pasiphaea tärda Kröyer. 



1844 — 45. Pasiphae tärda KröyER, Karcinol. Bidr., 1. c. p. 453. 

 184C. » Kröyer, Voy. on Scand. etc, pl. G, fig. 



1. A. B. a—o. 

 1868. Tasiphae norvegica M. Särs, Bidr. til Kundsk. etc, 1. c. 



p. 282, tab. IV, V, fig. 81, 87—90. 

 1877. » tärda G. O. Särs, Prodr. descr. Crust. etc, 1. 



c p. 242. 



