4S AXEL OHLIN, ARCTIC CRUSTACEA. 



^tat. 21. lat. IH" -21' N.. long. 15° 20' E., Ice-Fjord, North-Fjord, 

 West Spitzbergen, dei)th 175 iii., sött brown-reddish cla}', 

 19/VII, two spec. 

 . 37. lat. 8*1 14' N., long. 22^50' E., NE. of Seven Islands, 

 depth 150 m., bottom tenip. + 2° C, grav clay, 20/VIII. 

 one spec, 

 - 40. lat. 79° 58' N.. long. 1)^30' E., 19—20' NW. of Danish 

 Island, depth 435 ni., bottom temii. + 1,ö C, grav clay 

 with stones, 27 VIII, one spec. 



in 1899: 

 stat. 33. lat. 70' 43' N., long. 22' 29' W., Scoresby Sound, Hurry's 

 Inlet, depth 70 m., mud, 7 VIII. 



This beautifnl species was first described by Heller, avIio 

 found one specimen (a female) in the small eollection which 

 was saA^ed by the gallant Anstro-Hungarian Expedition 

 from Franz Joseph Land. My specimens agree thoronghly 

 well with HellerV description and figure, althougb differing 

 in some points. For instance. Heller says about the outer 

 candal appendages: »Die seitlichen Anhänge beträchtlich län- 

 ^■er als der mittlere Anhang, ihr schlanker, walziger, an der 

 Innenseite mit einzelnen Börstchen besetzter Stiel iiber die 

 j\Iitte des niittleren Anhanges hinausragend; die beiden End- 

 aste fast so läng wie der Stiel», and in his figure it is drawn 

 so. All niy specimens have the outer appendages but a little 

 longer than the telson, this reaching nearly to the last (third) 

 joint of the inner ramus of the terminal l)ranches. The stem 

 is twice as long as those (fig. 10 d). 



In the following year, 1879, Särs 1. c. described a new 

 species under the name of Diastylis nodosns, of which he says: 

 »D. spinuloso (Heller) valde affinis, sed dignoscendus scuto 

 dorsali pro spinis nnmerosis acuminatis nodis niodo paucis et 

 obtusis instructo, segmentis pedigeris, nltimo accepto, dorsa- 

 liter non spiniferis. articnlo ultimo pedum l:mi paris breviore.v 

 In the Norwegian North Atlantic Expedition he gives a de- 

 tailed description and fignres of it based upon a single spe- 

 cimen, a 3^oiing male. 



Once before ^ I suspected, like Hansen (1. c), that B. spi- 

 milosa Heller and D. nodosa G. O. Särs were identical. In 

 my eollection s from Spitzbergen, I find now a yoimg male 

 which happens to be exactly of the same size (18 mm.) as 



^ Ohlin, Bidrag till kännedomen etc. 1. c. p. 10. 



