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outer surface with transverse rugosities, external margin crenulate, ending in a sharp tooth at the 

 carpal articulation, under and inner surface smooth, but the latter with two longitudinal rows 

 of hairs, inner margin concave in its greater part, but in the distal third armed with a triangular 

 tooth, followed by two much smaller ones. Carpopodite roughened above, outer margin regularly 

 arched, inner angle 'rectangular, not rounded, between this angle and the articulation with the 

 palm the margin is crenulate. Chelae small, palm much shorter than the fingers and higher 

 than long; outer surface covered with sharpened granules which at the proximal under part 

 of the surface are obliquely-longitudinal; upper margin marked by a finely-striated 

 line'); the proximal half of w^hich is convex, the distal half straight and 

 ending above the base of the movable finger into a sharp tooth, inner surface 

 of palm with a few widely-scattered granules but dorsally there are two short and indistinct 

 rows running parallel with the transversely-grooved line along the upper margin: fingers not 

 flattened, longer than palm, not gaping, distinctly spooned at the tips, and nearly straight, 

 with some conspicuous pits, in each of which a short hair is placed; back of movable 

 finger with a longitudinal row of more than 30 transverse tubercles, the 

 proximal 10 — 12 of which, however, present the shape of the usual sharp granules and gradually 

 pass into short, transverse ridges, that run along nearly the whole length of the finger, but 

 disappear on the distal third -) ; cutting margin of this finger with four rather distant, large teeth 

 and in the interspaces between the second and third and between the third and fourth 2 — 4 

 much smaller ones; on the opposite border there are proximally two or three rounded teeth, 

 then follows a large subdivided tooth, that is again followed by two acute teeth alternating with 

 two very minute ones. 



The ambulatory legs are not particularly elongate, but remarkable by their very bulky 

 and broadened meropodites. First and fourth pair of legs not much unequal in length, but 

 much shorter than the median pairs. Meropodites somewhat less than twice as long 

 as broad, with sharp and crenulate margins; greatest width found near the distal end, upper 

 surface transversely rugose, anterior margin convex, ending in a sharp subdistal tooth, posterior 

 margin perfectly straight. Carpo- and propodite together as long as the meropodite, flattened, 

 somewhat roughened, but quite hairless, like the meropodite, except at the hind end of the 

 propodite, where, especially in the case of the first pair of legs short hairs are found ; propodite 

 longer than the carpopodite; dactyli very short, about one-third of the length of 

 the preceding segment, slightly curved, with six longitudinal rows of hairs. 



The general colour of this species is a reddish-yellow; the legs of the young cf bear 

 traces of darker cross-bands. 



In my paper on Sesarma I have treated separately of 5. clongata and 5. latifemur 

 Alcock, but I am almost convinced, that Alcock's species is not specifically distinct. In comparing 

 the figure in the 111. Zool. "Investigator" "") with mine,' there is such a complete agreement in 



i) According to de Man there is a pectinated crest on the palm of the adult ^-^'. 



2) It is of course to be expected, that this character of the chela is much more pronounced in the adult ,3'; UE Man mentions 

 40 of them in the type specimen but in the young q" at my disposal scarcely any trace of these tubercles is found. 



3) Crust., prt 10, 1902, pi. 66, f. 2. 



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