E. eximia n. sp. — The lobe from first antennular 

 joint with 6-10 spiniform denticles along the margin, but 

 without any ramified process from the outer angle. Second 

 antennular joint above at the outer distal angle with a 

 rather long, spiniform, acute process and a little behind 

 the inner distal angle another spiniform or deeply bifurcate 

 process. The copulatory organs (Fig. 5) have the terminal 

 process long, its distal third gradually tapering to the acute 



Fig. 5. Euphausia eximia n. sp. A. Inner lobe of left 

 copulatory organ, from behind; p 2 . terminal process; 

 p'\ proximal process. B. Similar lobe, from the inner 

 side. 



end and evenly curved, while a thin spine originating from 

 the base of this distal third projects to near its end ; the 

 proximal process has its distal third compressed, without 

 teeth on the inner side, the terminal part much bent and 

 with the end rounded as in E. Krohnii. — Length i6-20 mm . 

 Tropical East Pacific. 



E. americana n. sp. — The lobe from first antennular 

 joint with 5-6 denticles along the margin but without any 

 ramified process from the outer angle. Second antennular 

 joint above at the distal angles with the tubercles rudimen- 

 tary or wanting. The copulatory organs (Fig. 6) have the 

 ; terminal process short, thick, terminating in a strong trident 



(210) 



