REPORT ON THE SCHIZOPODA. 195 



forming an obtuse angle, without any distinct tooth. The proximal part of the flagellum 

 projects widely beyond the scale, and has the middle joint by far the largest, the last 

 very short. 



The anterior lip (fig. 10) is chiefly distinguished by its projecting anteriorly as an 

 exceedingly long and sharply pointed spine, denticulate at the edges. 



Tlie posterior lip (fig. 1 I) has its terminal lobes narrowly rounded in front, and finely 

 ciliate at the tip. 



The mandibles (fig. 12) are developed in the usual manner, and have the armature of 

 their cutting edges (fig. 13) rather strong and somewhat difi'erent on the two mandibles. 

 The palp (see fig. 12) is rather large, with the middle joint lamellar, the last of oval 

 form and furnished with a double row of delicate bristles. 



The first pair of maxillae (fig. 14) have the outer dentiferous lobe sharply incurved, 

 with a slight angular bend in the middle ; the inner lobe is rather small and quite mem- 

 branous, bearing at the edge several strong setae. The exognath is distinctly visible in 

 the form of a narrow lamellar expansion of the basal part, densely ciliate at the 

 edge. 



The second pair of maxillae (fig. 15) exhibit quite a normal structure. The last joint 

 of the palp is comparatively small and of an oval form, with the outer edge naked. The 

 exognath is rather large, elliptical, and fringed with al:)out thirteen strong plumose .setae, 

 the posterior of which issues at some distance from the rest, and is more sharjily 

 curved. 



The maxillipeds (fig. 16) are very strong, with the basal section clearly composed of 

 two very broad segments — the coxal and basal, — the former bearing exteriorly the 

 lanceolate epipodite, the latter exteriorly the exopodite, interiorly the strongly curved, 

 five-jointed endopodite, or palp. The terminal joint of the latter is very small and 

 armed witli a strong curved claw ; the four others are nearly uniform in size. No true 

 masticatory lobe can be detected at the inner corner of the basal section. 



The gnathopoda (fig. 17) exhibit quite an unusually robust structure, especial)}' in 

 the male, and bear a much closer resemblance to the maxillipeds than to the true legs. 

 The basal part is very broad and muscular, and the carpal joint exhibits in the male a 

 strong triangular expansion of the inner edge, to wliich the terminal i)art admits of being 

 opposed. 



The true legs (fig. 19) are comparatively short, and in the female uniform in 

 structure, with the terminal part remarkably small, not attaining by far the length of 

 the preceding (carpal) joint, and composed of only four articulations, the last of which is 

 quite rudimentary and almost hidden between tlu> bristles issuing from the preceding- 

 articulation ; in the posterior pair this part (fig. 20) is a trifle more elongate, and has one 

 articulation more than in the rest. In the male the first pair of legs (fig. 18) are 

 peculiarly modified, the terminal part being rather dilated in the middle, and bearing 



