1 66 



than the next, and separated by rather deep notches, but as often they take the form of two 

 spines only -(fig. i a) and are in this case more difficult to be detected. Immediately behind the 

 posterior tooth the carapace reaches it greatest breadth, and from this point the sharp lateral 

 margin disappears altogether backward. 



The external maxilipeds are rather broad, the merus is much shorter than the ischium, 

 rouohly quadrate, with the antero-external angle somewhat prominent and smoothly rounded; 

 the exognath is narrow, its breadth attaining only a third of that of the ischium. The lateral 

 borders of the buccal cavity are parallel. 



The chelipeds are subequal in the Q, but unequal in the cf, the larger chela being 

 found at the left in all the cf at hand. The meropodite is sharply edged at ujjper and inner 

 border, but not serrate; the upper border presents a very indistinct prominence near its distal 

 end, which scarcely can be called a tooth ; the carpopodite is somewhat sharpened at the inner 

 angle, but not produced, and for the most part smooth, only towards the anterior border we 

 observe numerous granules, mostly scattered among very short hairs, and the same granules 

 and hairs are found all over the outer surface of both palms in the 9. and of the right palm 

 in the cf; towards the bases of the fingers the granules often show the tendency to arrange 

 themselves in one or two longitudinal rows, which in the 9 extend half-way up the fingers, 

 the distal half of the fingers in both sexes is dark sepia-brown, smooth and naked, longi- 

 tudinally grooved and roughly crenulate, especially so in the case of the lower finger ; inner 

 surface of palm and fingers perfectly smooth. The larger (left) palm of the cf (fig. i d) is for 

 the greater part entirely smooth, and the usual granules and long setae, that cover the surface 

 of the right palm, are here restricted to a small portion along the upper border, the lower 

 finger is very short and high, tapering rapidly, the mobile finger is much longer, much curved 

 (in the figure the tip of the finger is seen to be broken off), and the dark colour of the fingers 

 extends here farther backward than is the case in the opposite finger. In young d" the outer 

 surface of the left palm is still wholly covered with granules and hairs like that of the right, 

 but with advancing age the smooth portion becomes larger and larger, the final stage apparently 

 being attained at rather different sizes of the various individuals at hand ^). 



The walking legs are not very much elongate, the penultimate pair, which is the longest, 

 being not quite three times the length of the carapace. All the legs are quite unarmed, but 

 rather densely fringed along the margins, particularly so along the outer (anterior) border of 

 carpo- and propodite and on the dactylus. The meropodites are four times as long as broad, 

 the dactyli are nearly straight, longer than the preceding propodites, at least in the case of the 

 middle pairs of legs, with the horny tip freely projecting and slightly curved. 



The first and the third segment of the abdomen of the c? touch the coxopodites of the 

 posterior legs; the abdomen of the 9 is not very broad and resembles largely that of the other 

 sex, though it is much more regularly tapering from the third to the seventh segment. The 

 eggs are not very numerous and unusually large (0.57 mm. in diameter). 



i) In ihis way it may be explained why .\. Milnk-Edwards (Nouv. .Aixh. Mus. Paris, t. 9, 1S73, p. 267, pi. 12, f. 2) describes 

 ihe under part of the left p.ilm as being finely granulate, whereas DE Man (.'Vrch. Naturgesch., Jahrg. 53. i., 1SS8, p. 349) in a specimen 

 of nearly the same size found the under part of this left palm quite smooth, though minutely pitted. 



