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PROCEEDINGS OF THE NATIONAL MUSEUM 



Peraeon. — No epimeral plates visible in dorsal view. Lateral 

 borders of peraeon somites slightly convex. Second somite longest; 

 fifth shortest. 



Pleon. — Composed of two somites, a short anterior somite and a 

 wide shieldlike pleotelson. Pleotelson with five to seven large spines 

 on each lateral border. Three or four setae between each spine. Pos- 



a e 



Figure 31. — Jaeropsis dubia, new species, female paratype: a, Left mandible; b, left second 

 maxilla; c, distal border of maxilliped endognath; d, maxilliped; e, left first maxilla. 

 (Magnification as indicated by scales: b and e same as a.) 



