152 ZOOLOGISCHE MEDEDEELINGEN — DEEL HI. 
The chelipeds afford most characteristic features. They are large 
and bulky, of equal size, and apparently of a light colour in life. 
Superior border of arm with a rectangular tooth near the distal end, 
posterior border crenulate, with a sharp subdistal tooth, anterior border 
dentate, posterior half forming about 
a right angle with anterior half (Fig. 
4a). Carpopodite transversely rugose 
at the outer surface, inner angle 
produced. Palm much inflated, 
its height exceeding its horizontal 
length (Fig. 4b); outer surface very 
minutely granulated ; near the carpal 
joint and towards the upper margin 
the granules tend to form short rows, 
but in the middle of the outer sur- 
face they are irregularly distributed ; 
here a short obliquely longitudinal 
wrinkle is observed. The upper 
margin.is sharply indicated 
by a row of horny-coloured 
granules, most of which are com- 
posed of two or even three granules, 
placed closely together. This charac- 
teristic row has been very well 
. observed by de Man (1880). Inner 
surface of the palm coarsely but 
sparingly granulated, the largest 
» granules being found in the superior 
half, especially towards the upper 
Fig. 4. Sesarma eydouxi H. M. Edw. GE que ae as: Der 
a Right cheliped, dorsal view. row. The immobile finger is much 
b. Right chela, outer view. Magn. 2. flattened, excavated at inner surface, 
but provided at under margin (which 
is in a straight line with under margin of palm) with a row of sharp 
spines, directed forward and continued up to the tip. The movable finger 
is much curved, its back is provided with a longitudinal row of 12—13 
denticles, with mostly horny-coloured tips; besides, there are at the base 
some smaller denticles, irregularly placed; outer and inner surface smooth 
and shining, with numerous small pits; near the base, at the outer sur- 
face, is a small, rather well defined excavation. — 
The meropodites of the walking legs are very much enlarged, being 
