214 Part III. — Twenty -fifth Annual Report 



second joint bears a long stout and curved spine ; the end joint is narrow, 

 about twice longer than broad, and furnished with a few terminal setae 

 (fig. 10). 



The second maxillipeds are moderately stout and elongated ; they are 

 also apparently three-jointed, and bear a number of plumose setse, as 

 shown in the drawing (fig. 11). 



All the thoracic feet, both in the male and female, are short and 

 moderately stout, and the general structure of the first three pairs is 

 somewhat similar in the two sexes, though they differ somewlfat iu the 

 armature and in one or two other minor details. 



In the first pair the inner branches are composed of two and the 

 outer of three joints ; there is not much difference in the length of the 

 two branches. The second joint of the inner branch is rather longer 

 than the first, while the middle joint of the outer branch is much 

 smaller than either the first or the third joints. Both branches are 

 similarly armed in the two sexes. The outer are furnished with several 

 stout spines on the exterior margin and apex, and with a short plumose 

 setse on the inner margin. The inner branches are provided with a 

 number of plumose setse, especially on the inner edge, but those on the 

 inner branches of the female are more elongated. There is also a stout 

 sigmoid spine on the inner aspe:t of the second basal joint in the female 

 first pair, which appears to be wanting in that of the male. (See figs. 

 12 and 13.) 



The second pair in both sexes have the inner and outer branches 

 three-jointed. In that of the female the inner branch is rather shorter 

 than the outer ; the first joint bears one setse, the second two, and the 

 third two on the inner margin; the third joint has also three apical setse 

 and another on the middle of the outer margin. All these setfe are 

 elongated and plumose. The outer branch has the proximal joint 

 moderately stout and as long as the next two joints taken together : it 

 bears a single seta on the inner edge and a short spine on the outer distal 

 angle; the second joint, which is smaller than the first or third, also 

 bears a short marginal spine, while the third joint has two spines on the 

 outer margin and two at the apex. 



In the male the length of the outer and inner branches of the second 

 pair is about the same ; the armature of the inner margin of the inner 

 branch is similar to that of the second pair in the female, but the end joint 

 bears two terminal spines instead of setse, with another spine on its 

 outer margin ; the armature of the outer branch in the male does not 

 differ much from that of the same branch in the female, except that the 

 marginal spines are rather longer. (See figs. 14 and 15.) 



The third pair, a.s in the second just described, have in the two sexes 

 both branches three-jointed. In the male the third pair scarcely differs 

 from the second either in structure or armature. In the female the third 

 pair is rather smaller than the second, but the inner branch carries the 

 same number of plumose setse, while the outer branch, though armed 

 with the same number of marginal spines as that of the second, wants 

 the seta on the inner nrargin of the first joint (fig. 16). 



The fourth pair in the female is almost the same in structure and 

 armature as the third pair ; but in the male the fourth pair is very small, 

 and though the outer branch consists of three joints, the inner is only 

 two-jointed and distinctly shorter than the outer; both branches are 

 provided with moderately stout spine? (fig. 17). 



The fifth pair consists of a narrow, elongated, one-jointed branch, 

 which is articulated to a rudimentary basal joint and furnished with two 

 slender apical spines (fig. 18). The female represented by the drawing 

 (fig. 1) is about 4"5 millimetres in length. 



