REPORT ON THE AMPHIPODA. 1:243 



by the oblique palm, which is bordered with setules, having at the commencement two 

 stout palmar spines, between which the long curved finger closes down. Most of the 

 spines on this limb are strongly pectinate. 



Second Gnathopods attached rather above the middle of the segment. The 

 rudimentary side-plates very inconspicuous ; the first joint long and narrow, rather 

 longer than the hand, distally a little widened, at the extremity having the front 

 margin rounded on the outer side, while on the inner side the front margin is 

 produced into a sharp tooth ; the second joint scarcely longer than broad ; the third 

 joint lageniform, three times as long as the second ; the wrist a narrow triangle, little 

 more than half as long as the third joint ; the hand large and long, more than twice 

 as long as the greatest breadth, which is at the produced setiferous tooth, with which 

 the oblique hinder margin ends, and the long, somewhat convex palm begins ; the palm 

 margin is fringed with spinules and setules and forms another (not outstanding) tooth, 

 not far from the hinge of the finger ; the slightly convex front margin forms a very 

 small produced tooth at its apex ; the finger is long to match the palm, and, except at 

 its apex, broad ; the outer margin has some distant hairs, the inner is faintly crenulate, 

 with the appearance of small canals running from the new growth to the raised points 

 of the existing margin. 



First Perseopods attached rather behind the middle of the segment. The branchial 

 vesicles oval, large and long, attached by a short, narrow neck, which has almost the 

 appearance of a joint. The limb very much smaller than the branchial vesicles, not a 

 third of the breadth, and little over a third of the length. The first joint, attached to 

 a small hinge-piece, is shorter than the second and widens distally ; the second joint 

 is narrowed at the apex, where it carries a few small hairs. 

 Second Perseopods similar to the first. 



Third Perseopods attached on the ventral surface a little above the distal 

 extremity of the segment. The first joint the longest, distally a little widened, with 

 small groups of spines at three points of the front margin ; the second joint scarcely 

 longer than broad, with an apical group of spinules in front ; the third joint longer 

 than the fourth, widening to the distal end, with spinules along the front and at the 

 apex behind ; the fourth joint similarly armed, less narrow at the base ; the fifth 

 joint longer than the third, with a strong tooth projecting from the front margin close 

 to the base and armed with small spines, the rest of the front border fringed with 

 very small spinules ; the convex hind margin has setules at three points ; the powerful 

 finger, broad except at the curved apex, is of a length to reach the projecting tooth of 

 the front margin. 



Fourth Perseopods attached on either side of the widened distal end of the 

 segment, not materially differing from the preceding pair, but a little stronger. 



Fifth Perseopods attached on either side of the distal end of the segment, similar 



