— 9 — 



Telson is 7/2 times as long as broad, greatly narrowed in 

 the distal half which at its narrowest point is less than 2/5 as 

 broad as the base of telson; the latéral edges have a rather 

 low number of strong and long spines, and between thèse 

 numerous quite minute denticles are observed ; the distal 



incision is about 1/6 of the length of telson, and each lobe 

 terminâtes in a strong spine. — Length of an adult maie 

 ic).5 mm , of a female with marsupium 2o mm . 



Localities. — Stat. 1844, 3 spécimens; stat. 1849, 6 spé- 

 cimens; stat. 1 85 1 , 1 spécimen; stat. 1 856, 3 spécimens. 



Description. — This species is rather allied to the preceding 

 form but differs in several particulars : it is somewhat larger, 

 the rostral process is longer, the eye-stalks are thicker, the eyes 

 smaller, antennal squama and telson comparatively broader. 

 — The front end of the carapace is produced into a mode- 

 rately long, triangular , acute process turning considerably 

 upwards; seen from above the margin between this process 

 and the side is flatly convex. The eye-stalks are somewhat 

 compressed, very deep, strongly increasing in depth from the 



Fig. 7. — Right anten- 

 nal squama of same 

 spécimen. 



Fig. 8.— Telson of the 

 same spécimen. 



6. Boreomysis semicœea, n. sp. 



(Figs. 9-1 1) 



(30) 



