KONOL. SV. VET. AKADEMIENS UANnLTNGAK. BAND. 22. N:0 7. 108 



finelj' serrated along the inner one; there are grooves at the bases of the rami as in 

 the first pair. The tliird jjair are broader and stouter than the two preceding pairs; the 

 peduncle is only a little more than twice as long as broad; the inner ramus is scarcely 

 longer than the breadth of the ])eduncle, serrated along both margins; the onter ramus 

 is rather longer than the inner, and narrower; it is smooth on the onter margin, and 

 serrated along the inner. 



The tehon is broadly rounded, equalling a third of the length of the peduncle of 

 tlie last pair of uropoda, hut it is not as long as the breadth of the same peduncle. 



The f e m a 1 e. 



The body is broader and wider thaii in the male, and the colour is lighter. 



The head is as long as the first two perieonal segments together, much more broad 

 than long. The antennal groove commenoes below the middle of the front side of the head. 

 The head is fuUy twice as deep as long. 



The eyes as in the male. 



The first pair of antennce (Pl. VH, lig. 18). The tirst joint of the peduncle is stout, 

 cylindi'ical, fully twice as long as the two following joints together, the second joint is 

 thicker and a little longer than the third. The first joint of the flagellum is elongated, 

 tapering, nearly twice as long as the whole peduncle, the inner side is set with equi- 

 distant tufts of slender hairs; a second, very small, flagellar joint is always present, tipped 

 with one or two minute hairs. 



The second pair of a.ntennce (Pl. VII, fig. 19) consist of four joints, the first three 

 raay be regarded as the third, fourth and fifth joints of the peduncle; the third or first 

 free joint is very short, globular, the two following joints are equal in length. The only 

 flagellar joint is elongated, tapering, longer than the whole peduncle, the inner side spar- 

 ingly provided with minute hairs. 



The mouth-orf/ans are like those in the male. 



The perceon is abruptly widening from the second segment, and again gently narrow- 

 ing from the fourth segment; the third segment is the widest, the third and fourth are 

 the longest, equal in length. 



The epimerals are as long as the under margins of the corresponding segments; the 

 epimeral of the fourth pair is the longest, a little longer than that of the third pair. 



The branchial säcks are like those in the male. 



The ovitectrices are a little longer than the femora of the corresponding legs, the 

 margins are smooth. 



The firsi jmir of j)erceopoda (Pl. VII, fig. 20 and 21) are more robust and powerful 

 than that pair in the male. The fernur is very broad, not twice as long as broad, the 

 front margin is strongly convex. The genu is as long as broad, smooth. The process 

 of the tibia is rather longer than in the male but does not reach fully to the base of 

 the carpal process; the lower margin of the tibial process is fringed with stout bristles. 



