286 0. 0. SARS, 



The anterior pairs of coxal plates are but little deeper than the cor- 

 responding segments, and are fringed on the distal edge with a restricted 

 number of slender bristles. The 1st pair (see tig. 17) are somewhat expanded 

 in their outer part, with tlie distal edge slightly curved. Tlie 2 succeeding 

 pairs are oval quadrangular in form, and obtusely truncated at the tip. The 

 4th pair are fully as bi'oad as tliey are deep, and of the usual, irrcguhir, 

 angular shape. 



The cpimeral plates of the mctasome are rather large, and without any 

 trace of bristles. The last 2 pairs are nearly rectangular, whereas the 1st 

 pair, as usual, are more rounded. 



The urosome is comparatively stout, and has not any spines dorsally, tlu^ 

 first 2 segments having only in the middle of the dorsal face a few small hairs. 



The eyes are rather small and of an oval reniform shape, with dark 

 pigment. 



The antenna} (figs. 15, IG) exhibit a structure similar to that in N. 

 qiiadmnanus, but have the flagella less fully developed, each being com- 

 posed of only 7 articulations The accessory appendage of the superior ones 

 is scarcely half so long as the flagelliim, and 5 -articulate. 



The gnathopoda (tigs. 17, 18) are moderately strong, and, unlike wliat 

 is the case in the other species, subequal, the propodos being in Itoth pairs 

 almost exactly alike both in size and shape. It is of an oblong quadrangular 

 form, with the palm nearly transverse and much shorter than the hind 

 margin. The spines issuing from the lower corner are less strong than in 

 N. (jucuhhnanits. 



The pereiopoda resemble in their structure those in the said species. On 

 closer comparison, however, some minor differences are to be found. Thus the 

 basal joint of the antepenultimate pair (fig. 19) appears comparatively shorter 

 in proportion to its breadth, and that of the last pair (tig. 20) has the post- 

 ei-ior expansion still larger and more regularly rounded, with a smaller 

 number of marginal bristles. 



The 2 anterior paii-s of uropoda (fig. 21) are likewise much of the same 

 appearance as in A^ quadrinianiis, except that the rami want the lateral 

 spine present in that species. 



The last pair of uropoda (fig. 22) ai'e still more slender than in the said 

 species, the outer ramus being about 3 times as long as the basal part. It 

 has but very few marginal bristles, and, as in N. qmdrimanus, 2 fascicles 

 of spines on the outer edge. The inner ramus has but a single apical spinule. 



The telson (tig. 23) differs from that in the said species in having the 

 lateral lobes comparatively broader and not at all diverging, each being 

 armed at the tip with 2 unequal spinules. 



"tiHa.-MaT. CTp. 194. 12 



