KONGL. ST! VET. AKADEMIENS HANDL1NGAR. BAND. 22. N:0 7. 179 



The telson is tongue-shaped, somewhat longer than broad, and a little narrower than 

 the peduncle of the last pair of uropoda; it is shorter than the last ural segment, and 

 quite half as long as the peduncle of the last pair of uropoda. 



The fern al e. 



PI. X, fig. 24. 



The body is very broad, especially the peraeon, which, where it is broadest, is almost 

 twice as broad as the head. 



The head is a little shorter than the first two pergonal segments together and 

 somewhat broader than in the male. 



The first pair of perwopoda. The femur is longer than the four following joints 

 together. The carpus is comparatively long, quite as long as the two preceding joints 

 together and almost twice as long as broad at the lower end; the two notches on the 

 hind margin are set with stout bristles; the front margin is straight. The metacarpus 

 equals in length three fourths of the carpus; the front margin is strongly curved, and set 

 with some bristles; the hind margin is straight and serrated, the teeth being simple as 

 in the male. The dactylus is stout, and about half as long as the metacarpus; the hind 

 margin is serrated. 



The second pair reach somewhat beyond the apex of the carpus of the third pair. 

 The femur is broadly ovate, and longer than the four following joints together. The 

 carpus with the carpal process is longer than the two preceding joints together; the 

 front side of the carpal process is a little shorter than half the hind margin of the meta- 

 carpus, and fringed with stout bristles. The metacarpus is shorter than the carpus; the 

 front margin is curved, and set with a few bristles; the hind margin is straight, and 

 serrated as in the male. The dactylus is more than half as long as the metacarpus. 



The third and fourth pairs have the femur ovate, and somewhat longer than the 

 three following joints together. The tibia is as long as the carpus; both are smooth. 

 The metacarpus is longer than the carpus. 



The fifth, sixth, and seventh pairs are rather shorter than the two preceding pairs. 

 The femur is not broader than that of the two preceding. The tibia is as long as the 

 carpus. The metacarpus is longer than the carpus, but somewhat shorter than the 

 metacarpus of the third and fourth pairs; the front margin is not serrated. 



The pleon equals in length the last four pergonal segments together. 



The urus is longer than the last pleonal segment. 



The peduncle of the last pair of uropoda (PI. X, fig. 24) is nearly twice as long 

 as broad. 



The telson is tongue-shaped, and half as long as the peduncle of the last pair of 

 uropoda. 



