216 



FISHERY BULLETIN OF THE FISH AND WILDLIFE SERVICE 



PLATE 21. 



SCALES 



0.5 mm 



< FIGS. 4,9 



FIGS. 2,8,11,13-15 



FIG. 6 



FIGS. 1,5,7,10,12 



Plate 21. — (1) Pleuromamma xiphias, female, proximal part of first antenna; (2) fifth foot; (3) male, lateral 

 view; (4) abdomen, dorsal view; (5) fifth pair of feet; (6) P. abdommalis f. typica, female, proximal part of 

 first antenna; (7) male, abdomen, dorsal view; (8) fifth pair of feet; (9) P. abdominalis f. edentata, female, 

 lateral view; (10) proximal part of first antenna; (11) fifth foot; (12) P. abdomivalis f. ahyssalis, male, abdomen, 

 dorsal view; (13) segments 17 and 18 of right first antenna; (14) second pair of feet (distal end of exopods and 

 endopods not shown) ; (15) fifth pair of feet. 



