b BOVALLIUS, A. NEW SWEDISII ISOPOD. 



under börder of the segment, it is not rnorc tlian halfas dee)> 

 as the cpimeral of the prcceding segment (Pl. I. fig. 11). The 

 femur is short and ovate. The genu is as long as the femur 

 and funnel-shaped, with sorae strong short spines around the 

 lower margiii. The tihia is shorter and more linear. The 

 carpiis is as long as the tibia, with some short spines at the 

 inner margin. The metacarpus, of the same length, is nar- 

 rower and more linear. l^he dactylus is strong, longer than 

 the metacarpus. 



The fiftli pair of pereiopoda (Pl. II. fig. 14). The cpime- 

 ral is of the same form as in the preceding segment, not 

 dceper, but a little longer. The femur is broad, with an 

 excavation at the outer lower corner for the recej^tion of 

 the uppermost part of the genu. The genu is long, nearly 

 as long as the femur, with strong spines at the lower margin. 

 The tihia is shorter, scarcely more than half the length of 

 the preceding joint, but broader, with strong tooth-like spines 

 around the lower margin (Pl. II. fig. 15). The carpus is a 

 little longer than the tibia, with a long strong bristle at the 

 lower inner corner. The metacarpus is as long as the pre- 

 ceding joint, but narrower; the angulated undqr margin pro- 

 jects into a process of articulation; at its inner corner is 

 a thick obtuse spine containing a glandle with a ductus ope- 

 ning at the tip of the spine (Pl. II. fig. 16). 



The sixth pair of pereiopoda (Pl. II. fig. 17) are the longest 

 of all and, when extended backwards, reach nearly to the 

 end of the urus. The epimeral is distinct, much larger and 

 deeper than the preceding one, but does not occupy the 

 whole under börder of the segment; it is slightly pointed at 

 the posterior corner. The femur is broad and stout, with a 

 little plumose hair at its outer margin, and some short bristles 

 at its lower, inner corner. The genu is longer than the fe- 

 mur, with some peculiar bristles and spines at its lower 

 margin. The spines are stout, obtuse, with a small hair 

 fixed ncar the tip; the interiör of the spines is filled with 

 a glandular mäss. The bristles are sharp-pointed, plumose at 

 the tips. (Pl. II. fig. 18). The tihia is shorter than tho 

 genu, with short spines at the lower margin, concavated at 

 the inner margin. The carpxis is longer and narrower than 

 the tibi», concavated at the inner margin, and armed at tho» 

 lower inner corner with a long strong spine, and around the 



