ied Sadan 
CRUSTACEA OF TILE MERGUI ARCHIPELAGO. 87 
internal margin, and three in the external row, the proximal of 
the latter being found at the articulation with the wrist. The 
distal spines are situated above the articulation of the mobile 
finger. The outer surface of the hands presents three longi- 
tudinal parallel ridges, one below and near the under margin, and 
continued upon the immobile finger, the second on the middle 
of the outer surface, and the third, proceeding parallel to the 
second, from the proximal spine of the external row of the upper 
margin up to the middle of the palm. In the adult specimen 
these ridges are smooth, in the younger individuals often 
minutely granular. The outer surface of the palm, its convex 
under surface, and the inner surface, which also presents 
a more or less distinctly indicated longitudinal ridge on the 
middle, are smooth; but the upper surface of the palm is 
minutely granular; the dorsal ridges on the upper surface, 
which terminate in the spines, are also somewhat granular. On 
the hand of the smaller chelipede of the adult specimen these 
granules are less distinct. The fingers are similar to those of 
G. annulatum, Fabr. 
The three succeeding pairs of legs are a little more slender than 
those of G. annulatum, Fabr., the joints being slightly more 
elongated. Thus the propodites of the legs of the third, or middle, 
pair are thrice as long as broad; in G. annulatum, however, they 
are scarcely more than twice. The dactylopodites are also more 
slender. 
The natatory legs are similar to those of G. luciferum= G. qua- 
drimaculatum. The merus-joint is about twice as long as broad, 
slightly longitudinally grooved near the anterior and again near 
the posterior margin, which is armed near the distal end with a 
strong spine. The carpopodite is armed, as in G. spiniferum, 
Miers, at the posterior margin of its under surface with an 
acute backwardly directed spine. The penultimate joint or pro- 
podite in all the specimens is denticulated along its posterior 
margin, having 7-9 acute spinules. The flattened terminal joint 
has a small spinule at its distal extremity. 
Like the cephalothorax, the legs are also covered with a close 
pubescence, while the more prominent parts, such as the ridges 
and spines, are glabrous ; in many examples, however, this pubes- 
cence has been worn off. 
