A REVIEW OF THE MYSIDACEA 



57 



Figure 11. — Boreomysis rostrata Ulig ? : a, Anterior end of adult female from dorsal aspect; 

 b, anterior end of adult female from lateral aspect. 



Remarks. — The determination of these specimens has presented 

 some difficulty. The telson (fig. 12, c) is very characteristic. It is com- 

 paratively long and narrow, and the spines on the lateral margins are 

 sharply graded and grouped. There are about eight relatively large 

 spines on each lateral margin, between which are to be found groups 

 of much smaller spines, from 4 to 6 in number. At the apex of each 

 terminal lobe there is one conspicuous large spine, inside which are 



