second joint is oblong oval, considerably longer than 

 the first ; the following joint is long and narrow, 

 with a strong twist, its slightly notched apex reaching 

 a little beyond the first joint of the geniculate 

 exopod ; the epipod is large, triangular, broad at 

 the base and for two-thirds of the length. In the second 

 maxillipeds the first three joints are short, the fourth is much 

 longer, narrowing distally, shorter than the first joint of the 

 geniculate exopod, but subequal to the combined fifth, 

 sixth and seventh joints, which fold closely against it, the 

 rounded seventh carrying among others several strong horny 

 spines ; the narrow epipod is accompanied by a branchia. 

 The third maxillipeds have the third joint broad, rather 

 longer than the fourth, carinate on the inner surface, the 

 inner margin thickly fringed with a mass of hairs or setae ; 

 the fourth joint wide at the base, but narrow at the apex, at 

 which the fifth joint is attached, this and the two following 

 narrow setose joints folding closely against the fourth and 

 upper part of the third ; the first joint of the geniculate 

 exopod reaches nearly to the middle of the carinate outer 

 margin of the fourth joint of the main stem ; there is a 

 slender branchia. The chelipeds have the fifth and sixth 

 joints densely pubescent on the outer surface, but the thumb 

 and finger clean ; the thumb has the margins shallowly 

 dentate, and the apex bifid, the blunt tooth of the finger 

 closing into the cleft. Dr. Henderson mentions that the 

 fingers of the second and third trunk-legs have " two yellow 

 spines on the under surface of their proximal half," and that 

 the sixth joint of the fifth pair " gives rise to two minute 

 curved spines which oppose the dactylus." These I have not 

 been able to observe, but only a yellow spine or two on the 

 distal half of the fingers. 



The pleon is seven-jointed in both sexes, narrow in the 

 male, with several of the segments indented and in parts 

 strongly pubescent, broad in the female, trilobed, pubescent in 

 parts of the surface, strongly fringed on the borders ; the 

 telson is triangular, with convex sides. In the female, the 

 first pleopods are small, uniramous, cylindrical, apparently 

 seven or eight-jointed, but the articulation very indistinct. 

 The next four pairs are biramous, the outer branch long, 

 laminar, the first joint curved, narrowest at the two ends, 

 inner surface concave, longer than the remaining joints 

 together, these being flat, eight to ten in number, suc- 

 cessively narrowing, the whole branch fringed with long 

 plumose setae, more densely on the outer than the inner 

 margin ; the inner branch cylindrical, narrow, of twelve or 

 fourteen joints, of variable length, carrying long setae, chiefly 



