22 AXEL OHLIN. ARCTIC CRUSTACEA. 



Gnathia stygia (G. O. Särs). 

 Fig. o. 



1877. Anceus stygius G. O. SÄRS, Prodr. dcscr. (.'riist. etc, 1. c. ]». 348. 

 188.5. G. O. Saks, Norske Xordliavsexp. 1, p. 85, ])1. 



8, figg. 1 — 22. 



On the return from our crnise to the Swedish depth», 

 I got this magnificent species at: 



stat. 28. lat. 76' 36' N., loug. 12' 10' West from Hornsund, depth 

 17.50 m., depth — 1,3, trausition clay, 1 VIII, six niales, 

 one feniale, one larva. 



The raales and the larva agree fully with Särs" descrip- 

 tion, l3ut as he had no female at his disposal, I think it is 

 worth while to give a iigure of it (tig. o). I have taken 

 the following measurements to show the proportions of tlie 

 body : 



Length of male ^ 10 mm. 



breadth > > 4 



length >^ female *) 



breadth - 4 



length v lar\'a 6,8 » 



breadth 1.." > 



As to colour the males are uniform grayish-white, the 

 female and the larva waxlike yellow. In all, the extremities 

 are of a more whitish tinge. 



During the cruises of >A'^öringen , Gnatliia sfi/gia was ob- 

 tained at no less than seven stations all belongiiig to the 

 cold area in depths ranging from 1200 to 2200 m. The bot- 

 tom was Biloculina clay. Nowhere else has it as yet oc- 

 curred, except ofF Sfjitzbergen. It must be considered as a 

 true deep-sea form. 



Fam. Aegidae. 



Aeara Leach 1H15. 



Aega psora (LlNXÉj. 



175S. Ouiscus Psora LixxÉ. Systcnia Xatime, ed. X., I. ]>. 636. 

 1761. Psora LiXNÉ, Fauna suecica, ed. II. n:o 2U54. 



1815. Aega enuirginata Leach, A tabular view ete. 1. c. p. 370. 



* from the frontal margin, not from tbe apites of the >mandil>le9>. 



