SCALES 



FIG. I 

 FIGS. 2,15 

 FIGS. 3-4,8-9,1 1-13 

 FIGS. 7,10 

 FIGS. 5,14 

 FIGS. 16-17 

 FIG. 6 

 FIG. 18 



FISH AND WILDLIFE SERVICE 



Plate 13. Figs. 1-14, Pontellopsis regalis. Female: 

 fig. 1, habitus, dorsal view; fig. 2, posterior part of 

 metasome and urosome, dorsal view; fig. 3, antennule; 

 fig. 4, antenna; fig. 5, mandibular palp; fig. 6, man- 

 dibular blade; fig. 7, maxillule; fig. 8, maxilla; fig. 9, 

 maxilliped; fig. 10, first leg; fig. 11, second leg; fig. 12, 



third leg; fig. 13, fourth leg; fig. 14, fifth leg. Figs. 

 15-16, PonteUina plumata. Female: fig. 15, habitus, 

 dorsal view; fig. 16, fifth pair of legs. Figs. 17-18, 

 Acartia ncgligcns. Male: fig. 17, posterior part of 

 metasome and urosome, dorsal view; fig. 18, fifth pair 

 of legs. 



568 



U.S. FISH AND WILDLIFE SERVICE 



