REPORT ON THE AMPHIPODA. 781 



the apex, oue of them very long ; the wrist longer than the hand, scarcely bulbous at the 

 base, the heel broadly tapering, curved at the tip, which reaches, or even reaches beyond, 

 the apex of the hand, the hind margin fringed with eleven long setse, the front or inner 

 margin having only a few hairs; the hand a sort of elongate oval, narrow at the l)as(', 

 with a few spinules on the hinder or inner margin and one at the apex of the outer ; the 

 finger very small and short, apparently not adapted for closing down between the hand 

 and the process of the wrist. 



Second Gnathopods. — Side-plates with the front margin convex, forming a little tooth 

 below, the lower margin also convex. The branchial vesicles of narrow oval shape, longer 

 than the first joint. The limb shaped nearly as in the preceding species ; the first joint 

 with two or three setules near the front apex, and two on the hinder, the margins other- 

 wise smooth ; the second joint not longer than broad, with two spinules on the apex of 

 the hind margin ; the third joint with five setiform spines along its distal border ; the 

 process of the wrist not quite reaching the beginning of the palm, its edges not serrate ; 

 the front margin of the hand nearly straight, not apically produced into a point either 

 sharp or blunt, with a group of setse a little below the apex ; the hind margin half as long 

 as the front, the smooth very convex palm margin and the finger being proportionately 

 shorter than in the other species ; there are a few spinules on the surface within the 

 palm-margin. 



Fiist Permoioods. — Side-plates more or less oblong, with a small tooth at the bottom 

 of the front margin. The branchial vesicles widening below, a little shorter and broader 

 than the first joint. The first joint lageniform, with three or four spinules on the front 

 margin, the hind margin smooth ; the third joint carrying a spiuule on the decurrent 

 front apex, and another higher up the margin ; the fifth joint is longer than the fourth, 

 as long as the third, the hind margin straight, unarmed, except with a couple of setules 

 or hairs ; the finger curved, sharply pointed, more than half the length of the fifth joint. 



Second Perwopods.—Th.e short front and hind margins of the side-plates diverge, and 

 are connected the one with the other by a very long convex lower margin ; the front 

 margin ends in a little notch. The limb does not materially difter from that of the first 

 perseopods. 



Third Peneopods. — The side-plates with the front lube broader and deeper than 

 the hinder one. The first joint oval, with three or four little spines on the front margin, 

 the hinder absolutely smooth ; the third joint very decurrent behind, the apex a little 

 rounded, and the convex hind margin having a spinule near the centre. The rest of the 

 limb missing. 



Fourth Pevssopods. — The hinder lobe of the side-plates deeper and longer than the 

 front one. The first joint of the limb larger and much broader than in the preceding 

 pair, with five spines on the front margin, the hinder perceptibly serrate ; the third 

 joint as in the third perseopods, but larger. The remainder of the liiub missing. 



