252 Miss D. A. Stewart on the Extra-Antarctic 



distal end, the anterior edge with one or two small setaa ; 

 carpus about equal in length to the basal joint, but slightly 

 narrower ; propodus curved, slightly longer than the carpus, 

 having numerous short setae on its hinder border ; dactylus 

 stout, almost straight, about \ as long as the propodus. 



Fifth and sixth legs considerably longer than the third and 

 fourth ; basal joint broad and laminate, with three setae on 

 the lower part of the anterior border ; merus long and narrow, 

 resembling the carpus in shape ; propodus stout, rather 

 shorter than the carpus, finely serrated 'on the lower half 

 of the anterior border ; dactylus short and stout. 



Seventh leg (PI. VI. fig. 4) very distinctive in appearance ; 

 basal joint extremely large in proportion to the remaining 

 ones, having the lower hinder corner considerably produced 

 and reaching to about half the length of the merus ; lower 

 part of the anterior border bearing six prominent seta?. 

 Remaining joints comparatively uniform in structure ; merus 

 with a large seta on the anterior and posterior borders; 

 carpus and propodus with their anterior margins serrated ; 

 dactylus stout, equal in length to the propodus. 



Pleon not sharply marked off from the pereion. Peduncles 

 of the 2^&opods shorter than the rami. 



The urus (PI. VI. fig. 6) having the second and third 

 segments coalesced at the centre, but free at the margins ; 

 second segment only half as broad as the first and third ; 

 hinder corners of the last segment slightly produced back- 

 wards. 



First pair of uropods with the peduncles linear, about 

 twice as long as the rami ; both rami equal in length, with 

 broad serrations on the margins, more numerous on the outer 

 than on the inner margin. 



Second pair of uropods considerably shorter than the first ; 

 peduncles not quite as long as the rami; outer ramus slightly 

 shorter than the inner, and both having seriated margins, 

 with the serrations finer and more numerous on the inner 

 margin. 



Third pair of uropods having the peduncles broad and 

 fairly stout, about the length of the rami ; inner rami stout, 

 rounded at the distal ends, with their inner margins finely 

 serrated ; outer rami narrower, broad at the base but tapering 

 to a point, and having numerous serrations on the inner 

 margin and a few small setae on the outer one. 



Telson (PI. VI. fig. 6) broad and tongue-shaped, about half 

 as long as the peduncles of the last uropods. 



Length, excluding antennas, 6 mm. 



