KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 22. N:0 7. 57 



end rounded, not three times as long as broad; the lower anterior corner is produced into 

 a sharp-pointed, smooth process, which is half as long as the genu; the front margin has 

 twelve teeth, the hind margin eight teeth, the inner margin is smooth; the femur is as 

 long as the three following joints together. The genu is almost as long as broad, with 

 two teeth on the front margin. The tibia is scarcely more than half as long as the 

 femur, dilated, thrice as long as broad; the front margin with twelve low teeth, the lowest 

 almost indistinct; the other margins are smooth. The carpus is much shorter than the 

 tibia, and narrower; all the margins are smooth. The metacarpus is fully twice as long 

 as the carpus, widening distally, club-shaped, with about twenty low teeth along the lower 

 half of the front margin, the other margins are smooth; there are tive bundles of long hairs 

 along the front margin; the apex of the joint is abruptlj' narrowing, forming a deep ex- 

 cavation behind the lower anterior corner of the joint, the dactylus impinges against the 

 foremost part of this corner. The dactylus is strongly curved, shorter than the breadth 

 of the metacarpus, and armed with four denticles on the anterior side just above the 

 raiddle. All the joints are provided with glands. The length of the leg is 38 mm. 



The pleon is longer than half the perteon. The dorsal keel with three small spine- 

 like prominences on the tirst two segments, and two such prominences on the third segm- 

 ent. . The lateral ridge is feebly spinulous, as are also the hinder margins of the segments. 

 The first segment is the longest, a little longer than the last pera^onal segment. The 

 length of the whole pleon is about 28 mm. 



The pleopoda (Pl. IV, tig. 23) have the peduncles a little shorter than the rami; 

 the outer i-amus is more slender than the inner. In the first pair the outer ramus consists 

 of twenty joints, the stout first joint is much longer than all the following together; the 

 first joint has thirty-five setaj along the outer margin and twenty on the inner margin; 

 the inner ramus has sixteen joints, and twenty-four setas on each margin of the first joint. 

 The length of the first pair is 14 mm. 



The urus has the first segment carinated, the dorsal keel has two small, spine-like 

 prominences, the lateral ridge is finely spinulous, as is also the hinder margin of the seg- 

 ment. The first segment is scarcely more than half as long as the last pleonal segment, 

 but much longer than the coalesced second and third ural segment. The last segment is 

 not carinated. The Avhole urus equals scarcely moi-e than a fourth of the length of the 

 pleon. The length of the urus is 7,5 mm. 



The uropoda (Pl. IV, fig. 24). The ^first pair reach fully to the apex of the last 

 pair. The peduncle of the first pair is much dilated, but comparatively narrow at the 

 upper end, it is a little broader and much longer than the peduncle of the last pair; the 

 outer margin is feebly cuiwed, armed with more than twenty shai-p teeth, the anterior 

 margin has about fifteen indistinct teeth, the inner margin is curved, and has eleven larger 

 teeth; the outer ramus is fully as long as the coalesced inner one, but much narrower, 

 almost styliform, the margins are smooth; it is as long as the breadth of the peduncle, and 

 equals scarcely a third of the length of the peduncle; the inner ramus is thrice as broad as 

 the outer, the outer and anterior margins are minutely serrated, the inner margin is coarsely 

 seiTated. The peduncle of the last or third 2)air is more than twice as long as the outer 



K. Sv. Vet. Akad. Handl. Band. 22. N:o 7. " 



