THE COPENHAGEN MUSEUM AND OTHEE SOUECES. 27 



variously denticulate, in two rows, which are set so closely together that it is difficult 

 to count and discriminate the spines. The palp is slender, tipped with a minute hair 

 and small seta. There is often a slight constriction of the margins near the apex, as 

 though a second joint were being thought of. 



Second maxillcc. The setae round the apex of the outer plate are longer than those of 

 the inner. The fringe on the inner plate is bounded by a seta conspicuously longer than 

 the rest. 



MaxilUpeds. The inner plates have the usual setse and three apical teeth. The 

 outer plates reach but little beyond the first joint of the palp, and have their spinules 

 set a little Avithin the margin. Both the second and third joints of the palp are broadly 

 lobed at the inner distal extremity. The third joint has a little rounded and shining 

 process for the aj^ex of its outer margin. On the inner surface there is a graduated row 

 of spines, and in the male a dense tuft of setae on the outer surface, from among which 

 the sharjD curved finger projects. The inner margin of the finger carries some spinules 

 or small hairs. 



First (jnuthopods. The side-plates are widened below, and have the front margin 

 straighter than the hinder one. The fifth joint is distally widened, and has the 

 projecting hind margin fringed with setae. The hand or sixth joint is as long as the 

 preceding, and in the male fully as wide, but narrower in the female. The hind margin 

 has a central fringe of setix', bounded by a slight contraction in the width of the hand. 

 The palm is rather oblique, fringed with little hairs and setules, and carrying two 

 unequal but stoutish spines at the extremity, against which the rather broad finger 

 impinges. There are spines on the inner surface of botli hand and wrist, and minute 

 hairs on the inner margin of the finger. 



Second gnathopods. The side-plates are oblong, with rounded corners below, but with 

 the hind margin somewhat excavate above. The branchial vesicles of these limbs and 

 the four following pairs have at the base a small vesicle accompanying the ordinary large 

 one. The marsupial plates of the female are long, distally acute, and, at least in the 

 distal part, closely fringed. As in the first pair, the second joint widens distally, the 

 third is short, the fourth is of nearly uniform breadtli, Imt having the hind margin longer 

 than the front. The wrist in the male is almost triangular, with convex front border, 

 and behind masked by the fourth joint, whereas in the female it protrudes a spine- 

 fringed lobe between that joint and the hand. In the male the band is massive, with 

 very oblique palm, uniformly convex till near the distal end, bordered Avith nuniei'ous 

 little spines, over Avliich the long and broad finger closes tightly, sending its point 

 into a little pocket on the inner surface of the hand, from which arises a small group 

 of stoutish spines. The hind margin is almost smooth, but has a small indent similar 

 to that in the first pair. In the female the hand is less massive, but still much larger 

 than the Avrist, Avith a very oblique palm, leaving a shorter hind margin, Avhich is fringed 

 with spines. In both sexes the finger has little hairs set at right angles to the inner 

 margin. 



First peraopods. The side-plates are a little broader than the preceding pair, but 

 similarly shaped. The fourth joint is longer and much broader than the fifth or sixth. 



4* 



