REPORT ON THE AMPHIPODA. 795 



Maxillipeds compact, differing but little in general structure from those of the 

 preceding species ; the outer plate witli six strong and long spine-teeth on the inner 

 margin, followed by four longer on the indented apical margin, and one on the outer 

 margin, rather shorter and more slender than those on the apex, but still more of a 

 spine than a seta. 



First Gnathopods. — Side-plates small and slender, directed forwards but not 

 reaching the base of the upper antennae, the front margin little curved, its lower corner 

 rounded and but slightly produced. The first joint not as long as the wrist and hand 

 united, a little widened distally, the front margin a little concave, with a few setules, 

 the hind margin convex or a little sinuous, with some long setse ; the second joint longer 

 than broad ; the third joint short, with the hind margin convex, furred below and 

 carrying three setae and a row of fine graduated geniculate spines, that nearest the apex 

 the longest ; the wrist nearly twice as long as the hand, narrow at both ends, widest 

 near the l)ase, the front margin carrying a few setules, the hind margin fringed with 

 numerous spines of various lengths and some long setae, many of the spines abruptty 

 narrowing at about the middle and ha\'ing the distal part pectinate ; on the surface of 

 this joint and of the hand there are numbers of adpressed cilia ; the hand is narrow, 

 widening a little distally, more than twice as long as broad, with groups of long setae 

 at and near the apex of the front margin; the straight hind margin fringed with a row 

 of short spines, and having a group of setae at the apex ; the palm is short, at right 

 angles to the hind margin, of irregular outline, fringed with long setae and defined by a 

 great palmar spine, which on its inner margin has a prominent tooth at right angles, 

 followed by some six slender denticles more oblique, and a rather stouter one that 

 is decurrent ; the short sturdy finger reaches beyond the palm-margin with its much 

 curved nail, which equals or exceeds the proximal part of the finger; the dorsal cilium 

 is close to the base of the nail, which has one or two cilia or setules at its base on the 

 inner margin. As in the previous species the palmar spine is of such a character, that 

 were it a process of the hand instead of inserted in it, the limb might be considered 

 chelate rather than subchelate. 



Second Gnathopods. — Side-plates not unlike the first pair, also directed forwards, 

 the front margin nearly straight, considerably longer than the hinder margin. Branchial 

 vesicles elongate oval. First joint thinner than in the first pair, but of about the same 

 length, equal in length to the wi-ist; the second joint much longer than broad, longer 

 than the third joint, channelled in front; the third joint shaped as in the first pair, but 

 armed only with a seta and a setule near the apex ; the wrist long and narrow, 

 slightly bent, with some setules on the front margin and a group of sette at its apex, 

 the hinder margin having some long spines and setae near the apex ; the hand long and 

 narrow, scarcely widened distally, about half as long as the wrist, with a large group of 

 long setae at, and another close to, the apex of the front margin; the hind margin 



