176 BRITISH OOPEPODA. 



claws ; hand of the second pair (fig. 7) dilated at the 

 base, subpyriform, terminating in three strong claws. 

 Both branches of the first pair of feet (fig. 8) are 

 3-jointed and thick, the last joint being in both cases 

 extremely small, and the terminal claws expanded 

 into delicate pulvilliform appendages ; the first joint 

 of the inner branch is much dilated towards the base ; 

 the external margin is ciliated, the internal ciliated 

 near the base, and gives origin, near the middle, to a 

 large plumose seta ; the second joint has a single 

 short seta ; first joint of the outer branch ciliated 

 externally, and provided with a large plumose apical 

 seta ; second and third joints each with one plumose 

 apical seta ; the outer branch is much the shorter of 

 the two. Three following pairs of feet 2-branched, 

 each branch composed of three joints ; the second pair 

 much shorter, however, than the third and fourth, des- 

 titute of marginal spines, and having the inner branch 

 shorter than the outer; first joint of the outer branch 

 fringed externally with a number of .spine-like 

 setae ; the external margins of all the joints in the 

 third and fourth pairs (fig. 9) are beset with short, 

 stout spines, those of the first joints more slender 

 than the rest, the limb being very similar to that of 

 the Calanidas. The fifth pair is2-jointed (fig. 10), the 

 basal joint marginally ciliated, elongated, and cleft at 

 the apex, each segment bearing a single long seta; 

 second joint much elongated, narrow, marginally 

 ciliated, with irregular transverse rows of hairs 

 towards the internal margin, one long seta on the 

 external margin, and three at the apex. The last 



