92 AXEL OHLIN, ARCTIC CRUSTACEA. 



Explanation of the figures. 



Fig. 1. Bytlwcaris simplicirostris G. O. Sars. 



I. Carapace from side. II. Seconcl, third, and fourth segments 

 of pleon. a^. antennula a^. scale of antenna, m^pg-third 

 maxilliped />o. second pereiopod. 



» 2. Pandalus borealis Kröyer, chela of lirst pereiopod. 



■^ 3. Boreomysis nohilis G. O. Sars. 



Mp. palp of mandible, O. uropods. 



:•> 4. AmhJyops Sarsi n. sp. 



I. From above, II. Cephalic portion, from above, III. same 

 from side. T + U, telson and uropods. 



» 5. Pseudomma Théeli n. sp. 



I. Cephalic portion, from above, a^. antenna, Mp. palp of man- 

 dible, mxp. maxilliped, p^, first pereiopod (gnathopod). £7, 

 uropods, T. telson. 



» 6. Pseudomysis abyssi G. O. Sars, tifth pleopod of male. 



