622 



very long ventral spine. Cephakm produced in front to a distinct, somewhat 

 flattened rostrum, lateral corners angular and but sliglitl3' projecting. First 

 pair of coxal plates conically produced in front ; 2nd pair deeper than the 

 other pairs, their outer part being in female obtusely rounded, in male 

 angularly produced. Epimeral plates of metasome comparatively small, each 

 being produced belovk^ to a sharp, recurved point. Eyes nearly obsolete, being 

 replaced on each side by an irregular patch of whitisli pigment. Superior 

 antennae very slender, and equalling in length the cephalon and mesosome 

 combined, 2nd joint of tlie peduncle considerably longer than the 1st, 3rd 

 joint very short, scarcely exceeding in length Vs of the 2nd, flagellum about 

 the length of the peduncle, and composed of about 14 articulations, accessory 

 appendage very small, biarticulate, with the last articulation extremely 

 minute. Inferior antennse in female not very strong, and considerably shorter 

 than the superior, penultimate joint of the peduncle a little longer than the 

 last one. and rather nari'ow, flagellum scarcely longer than the last peduncular 

 joint and G-articulate; inferior antennae in male much more strongly developed, 

 subpediform, with the penultimate and antepenultimate joints of the peduncle 

 considerably tiiickened and connected bj' a very movable articnlation. Anterior 

 gnathopoda in female less strongly built than in the preceding species, with 

 the carpus of moderate size and broadljf expanded below, propodos oval 

 triangular in form, with the palm very oblicjue and nearly straiglit, being 

 defined posteriorly by an obtuse angle; those in male considerably stronger, 

 with the palm of the jiropodos distinctly bisinuate. Posterior gnathopoda 

 slender and of same structure in the two sexes, though somewhat larger 

 in the male, carpus very large and densely setous on the lower edge 

 and the distal part of the upper one, propodos conparatively small, being 

 much shorter than tlie carpus, and gradually tapering distally, without any 

 palm, dactylns extremely minute. Pereiojioda very slender, the 3 posterior 

 ])airs with the basal joint rather narrow and nearly smooth. Branchial 

 lamellae very small. The 2 anterior pairs of uropoda less robust than in 

 the preceding species, and having the rami tipped by several strong spines; 

 last pair with the inner expansion of tlie basal joint rather narrow and only 

 armed with a single spine, terminal joint projecting beyond the former and 

 sublinear in form, with f) long apical bristles and another in the middle of 

 the outer edge. Telson rounded, with 2 slender spines on either side, 

 accompanied by a delicate bristle. Body of a pale yellowish hue, with more 

 or less distinct light orange bands across the segments, and having moreover 

 along the sides a series of irregular whitish patches produced l)y some opaque 

 matter lying inside the integuments. Length of adult female 5 mm., of 

 male 6 mm. 



