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is only somewhat wavy, straight in the middle and sloping regularly towards the lateral angles, 

 which are subrectangular. The inner and upper orbital margin are regularly curved, entire, not 

 notched, and the external angle is not at all prominent. 



The eye-stalks are very thick, cylindrical. Lateral margins of the carapace in 

 their anterior third part trans formed into two depressed, broadly-triangular 

 lobes, terminating in a small cup, directed straight forward- in the first and obliquely 

 in the second lobe, between the tips of the latter the carapace reaches its greatest breadth, 

 which, however, as has been said, only slightly exceeds the fronto-orbital width ; behind the 

 second lateral lobe, the lateral margins of which are strongly con verging backward, a third, 

 very minute, tooth is found and then the lateral margins disappear altogether and the carapace 

 is regularly narrowing backward. Posterior margin conve.x. 



The antennae are slender, the flagella scarcely hairy. Peduncle of antennulae rather 

 long, last joint much increasing in thickness towards the distal end ; hairs of flagellum generally 

 of a smoky or dusty colour which contrasts much against the dull-white colour of the animal. 

 Epistome large, sunk, with the hind part vertical. Lateral margins of buccal cavern parallel. 

 External maxilipeds broad, completely closing the buccal cavity (fig. 2^); ischium only little 

 longer than broad, with the antero-internal angle rounded and the inner margin entire, not 

 crenulate, and wholly hairless ; merus short, only slightly longer than half the length of ischium, 

 but quite as broad as the latter, owing to the antero-external angle being strongly 

 expanded, much more so than in any other species of Litochcira that I know of; exognath 

 nearly one-third as broad as ischium. 



Chelipeds subequal and in the 9 ^.s fuUy developed and large as in the cf. Meropodite 

 short, with all three borders sharpened, inner and outer border finely serrate, outer surface 

 rugose, upper border entire, but with one very strong, triangular tooth near the distal end. 

 Wrist with sharp granules above, inner surface flattened, provided at ventral margin with a series 

 of fine serrulations and terminating distally into a slightly depressed, triangular tooth, the tip of 

 which is curved forward. Palm (fig. 2 b) very characteristically sculptured and aftbrding the best 

 means of distinguishing the species at first glance : outer surface with five, obliquely- 

 longitudinal rows of sharp granules; the upper row near the somewhat keeled and 

 overhanging border of the palm is the broadest, but also the shortest, and between these rows 

 the surface of the palm is perfectly smooth and glossy ; under border of palm very sharply 

 keeled in its proximal third part, more distally this keel passes into a row of fine crenu- 

 lations, continued on the outer surface of the palm and the fixed finger till nearly to the 

 tip, these crenulations are accompanied in their proximal portion by closely-set, very short, 

 brown hairs ; inner surface of chela smooth for the greater part, but in its ventral part 

 provided with two longitudinal rows of granules, the inferior row being much the larger and 

 continued till the- tip of the immovable finger; under border of the latter granulate, straight, 

 tip slightly curved upward, height of finger remaining almost the same in its proximal half, 

 where at the outer side of the cutting margin a sharp, concave and prominent keel is found, 

 distal portion of "finger rapidly tapering to tip and with three crenulations, the proximal two 

 being very large, wing-like; mobile finger regularly curved, the whole back occupied by 



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