46 
pair of anteriorly-curving horns, frontal lobe itself unarmed and somewhat de¬ 
pressed; pseudorostral projection of moderate size, conically produced, horizontal; 
subrostral corners distinct, obtusangular. Exposed part of trunk with small 
scattered spinules forming dorsally a double row; last segment with a median 
.spinule behind, lateral parts produced to comparatively short acute projections. 
Tail (exclusive of the terminal appendages) somewhat shorter than the anterior 
division, and clothed with numerous small spinules. Eye very small and imper¬ 
fectly developed. Superior antennae rather slender, with the peduncle projecting 
far beyond the tip of the pseudorostral prominence, its 1st joint somewhat shorter 
than the other 2 combined, and coarsely denticulate along the outer edge and 
at the end, last joint very slender, linear. First pair of legs considerably longer 
than the carapace, basal joint not nearly attaining the length of the remaining 
part, and rather spiny in its distal part, penultimate joint much longer than the 
antepenultimate one, last joint comparatively short, not even attaining half the 
length of the penultimate one; 2nd pair with the ischial joint produced below to 
a strong spiniform projection, antepenultimate joint somewhat longer than the last 
2 combined; 3rd and 4th pairs comparatively less robust than in D. Eathkei, 
and having the basal joint coarsely denticulate behind. Uropoda exceeding half 
the length of the tail, stem very narrow, rami more slender than in D. Eathkei, 
and scarcely differing in length, being about half as long as the stem, outer 
ramus with scattered short bristles outside, inner with the 1st joint shorter than 
the other 2 combined, spinules of the inner edge about 10 in number (6 on the 
1 st, and 2 on each of the last 2 joints) apical spine very strong and forming the 
immediate continuation of the joint. Telson not reaching quite as far as the 
stem of the uropoda, its proximal third part of uniform width, cylindric, distal 
part gradually tapering, with about 8—9 spinules on each side, apical spinules 
somewhat longer than the lateral, and pointing straight behind. Colour greyish 
white, with a yellowish tinge. Length amounting to 12 mm. 
Adult male. Body much more slender than in female, with the anterior 
division considerably narrowed behind. Carapace very large and tumid, more 
than twice as long as the exposed part of the trunk, and nearly smooth, having, 
however, along each side a low, minutely serrated carina, joining, at about the 
anterior 3rd part of the length of the carapace, an obliquely transverse plica 
extending downwards; the horn-like spines found in the female replaced by 2 very 
slight tubercles; pseudorostral projection minutely denticulated on each side, and 
ha ving at the base 2 juxtaposed rounded protuberances, between which the eye 
is, as it were, sunk; subrostral corners produced in the form of rounded, coarsely 
dentated lobes. Exposed part of trunk perfectly smooth above, lateral projections 
