BY C. CHILTON-. 



729 



Fifth, sixth (uid seventh pairs of legs similar and longer than 

 any of the anterior four pairs. In the fifth (fig. 13) both 

 ischium and merus have the inner margin regularly fringed with 

 fine setaa; in the sixth and seventh (fig. 14) the ischium is thus 



Text-fie. 13. Fifth leg. 



Text-fig. 14. Seventh leer. 



fringed but the fine setae are almost absent from the merus. 

 Stout setae or spines on all the joints as shown in the figures. 

 Sixth leg longer than fifth and seventh longer than the sixth. 



First pair of pleopods (in the male) (fig. 15) of the usual 

 structure, exopod forming a very delicate rounded plate with 

 the margin regularly fringed with setae; endopod modified, 

 broad at the base, tapering to the apex and bearing a groove 

 fringed distally with short setules; male organ single, narrow, 

 6lightly emarginate at the end. 



Second pair of pleopods (fig. 16) with the exopod or outer 

 plate similar to that of the first, the modified endopod reaching 



