M AXEL OHLIN, ARCTIC CRUSTACEA. 



This form from which the former must be regarded as a 

 distinct species,^ since (1. O. Särs has made his important 

 discoveries with regard to the development of CrangonidfB 

 was first obtaiued off the coasts of England and Ireland. 

 Låter on, M, Särs, Boeck, and Daxielssen dredged it at seve- 

 ral places on the Southern and Western coasts of Norway 

 as far north as Christiansund, in lat. 62 35' N., but every- 

 where its occurrence was very rare. It lives mainly in mode- 

 rate depths ranging from 30 — 60 fathoms. GoÉs enumerates it 

 amongst Decapoda from Bohuslän. It has also been found 

 in the Mediterranean, in Adria. This fact, together with 

 its occurrence in shallower water, point to its more Southern 

 origin, as opposed to that of the preceding species. 



Lcngtli of greatest spec. 31 mm. The largest specimens 

 which M. Särs measured reached a length of 43 mm. 



Nectocrangon Brandt 1851. 

 Syn. Argis Kröyer 1842—43. 



11. Nectocrangon lar (OwEN). 



1839. Crangon lar OWEN, Zoology of Captain Beechey's Voyage, 



p. 88, pl. XXVIII, Fig. 1. 

 1842 — 43 Argis lar Kröyer, De hidtil bekj. nord. Krangon-Art., 



1. c. p. 255. Tab. V. Figg. 45—62. 



Localities: 

 in 1899: 

 stat: 39. lat. 72 45' N., long. 22 58 W., depth 35—60 m., light 

 yellowish-brown clay, one spec. 



in 1900: 

 stat. 27. Kaiser Franz Joseph Fiord, Muskox Fiord, depth 220 m., 

 clay, 21 VIII, one spec, rautilated det. Lönnberg. 



This species, first described by Owen, was made the type 

 of a new genus by Kröyer, but as that name Argis had un- 

 fortunately, been used before, it had to be dropped to make 

 room for Nectocrangon Brandt 1851. Another species, Necto- 

 crangon alasl'ensis, was described by Kingsley, in 1882, from 

 Alaska. '~ 



^ GoÉs considered botli speoies as identical, 1. c. p. 173. 



