KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 22. N:0 7. 227 



The second pair (PL XI, fig. 19). The femur is somewhat longer than all the 

 following joints together. The tibia is produced as in the first pair. The carpal pro- 

 cess is nearly as long as the stem of the joint, and its front side is only a trifle shorter 

 than the hind margin of the metacarpus; the front margins are fringed with bristles. The 

 metacarpus is a little longer than the stem of the carpus, and about twice as long as 

 broad at the base; the front margin is almost straight; the hind margin is sharply ser- 

 rated. The dactylus is not half as long as the metacarpus, and has the hind margin 

 serrated. 



The third and fourth pairs (PI. XI, fig. 21). The femur is much longer than the 

 three following joints together, almost linear, with the basal portion somewhat narrower, 

 and bent backwards. The genu is broader than long. The tibia is considerably longer 

 than the genu, and is very broad, nearly as broad below as the femur. The carpus is 

 about as long as the two preceding joints together; it is very broad and tumid; the hind 

 margin is armed with thre short bristles; within the joint there is a very large gland. 

 The metacarpus is a little longer than, but scarcely half as broad as, the carpus; the 

 hind margin is fringed with a row of short spines. The dactylus is a third part as long 

 as the metacarpus; at its base there is a circular opening for the glandular secretion. 



The fifth, sixth, and seventh pairs (PI. XI, fig. 22 and 23). The femur is tolerably 

 broad, broader below than at the base, and nearly twice as broad as the femur of the 

 two preceding pairs; in its middle there is a large gland. The genu is as long as broad. 

 The tibia is much longer than the genu, and is tolerably broad. The carpus of the 

 fifth and sixth pairs is fully as long as the two preceding joints together, linear, and 

 much narrower than the tibia; the carpus of the seventh pair is shorter than the two 

 preceding joints, but is considerably longer, and only a little narrower, than the tibia; 

 the front margin is smooth. The metacarpus of the fifth and sixth pairs is as long 

 as, that of the seventh is longer than, the carpus; the front margin it set with a few, 

 equidistant short spines. The form of the dactylus of the fifth and sixth pairs is peculiar: 

 at the base of the front side it is provided with a forked projection, which probably 

 serves as a cover for an outlet from the glands; the slender, feebly curved, and sharp- 

 pointed horns of the projection cross the dactylus on each side, thus making the dactylus 

 itself appear cross-shaped; the dactylus of the seventh pair has no such forked projection, 

 and shows a circular hole at the base as usual. 



The pleon is longer than the last four pergonal segments together; the first pleonal 

 segment is longer than the last pergonal. The lateral parts are obtusely rounded behind. 



The pleopoda. The outer ramus has eight joints, the inner seven. 



The urus is longer than the last pleonal segment. The first ural segment it scar- 

 cely longer than the last coalesced, but much broader; the last coalesced segment is 

 considerably broader than long. 



The uropoda. The first pair reach almost to the apex of the last pair; the pe- 

 duncle is narrow, linear, and about as long as the inner ramus; the rami are narrowly 

 elongate, sharp-pointed, without semicircular incisions at the base. The second pair reach 

 a little beyond the apex of the peduncle of the last pair; the peduncle is shorter than 

 the inner ramus. The peduncle of the third pair is narrow, linear, and much longer than 



