— 8 — 



B. Suborder MYSIDA. 



5. Boreomysis subpellucida, n. sp. 



(Figs. 5-8.) 



Description. — This species is allied to B. californica Ortm., 

 but differs in several minor features. The front end of carapace 

 is produced into a rather short, triangular, acuteprocess turning 

 somewhat or at least a little upwards; seen from above the 

 margin between the base of this process and the side is rather 

 convex but not angular. Seen from the side, the eye-stalk 

 is a little or somewhat widened from the base outwards, with 



Fig. 5. — Front part of Fig. 6. - Left eye of same 



the carapace with the spécimen, from above. 



left eyeof an adult maie 

 of Boreomysis subpel- 

 lucida. 



a conspicuous oblong obtuse process on the upper margin 

 rather near the eye; the eye itself is brown, only as high as 

 the end of the stalk, directed forwards and much downwards; 

 seen from above (fig. 6) the eye is several times broader than 

 long. The squama of the antennas surpasses the antennular 

 peduncles by about i/3 of its length ; it is a little less than 

 four times as long as broad, at the end less than half as broad 

 as before the middle ; the distal margin is a little oblique and 

 the outer denticle rather small. (In small, only about half- 

 grown spécimens, the squama tapers less towards the distal 

 end, the terminal margin is much more oblique and the outer 

 denticle therefore placed rather considerably behind the tip). 



