548 DR. J. G. DE MAN ON CRUSTACEANS [Dec. 12, 
As regards the two spines on the carapace and the telson, the 
female agrees with the male. The short flagellum of the internal 
antenn, when put back, reaches to the Ist tooth of the upper 
border of the rostrum. 
The legs of the 1st pair agree also with those of the male; the 
chela extends beyond the antennal scales and is distinctly more 
than half as long as the carpus. 
The legs of the 2nd pair are subequal, the left (Pl. X VIIL. fig. 13) 
being very little larger than the right. They show a less stout 
shape than those of the male, as is proved by the measurements. 
For example, the width of the distal end of the carpus is but one- 
fourth of its length, and the palm is also less broad in proportion 
to its length. The dactylus carries one small obtuse tooth at the 
end of the sharp cutting-edge (fig. 14), at one-third of the length 
of the finger from the articulation, and four smaller teeth, also 
obtuse, posterior to it; the fixed finger carries one single tooth 
at the end of the cutting-edge. These legs are also covered with 
small, slender spinules; those on the inner margin of the palm 
are more prominent than on the outer and more numerous than 
on the upper and lower surfaces, The ambulatory legs (fig. 15) 
are also slenderer than in the much larger male. 
When, however, the legs of the 2nd pair are compared with a 
female from Kadjang of the same size which belongs to the typical 
form (de Man, /. c. 1892, p. 449), then they appear in the female 
from Christmas Island distinetly stouter, especially the carpus. 
The male from the River Palopo (p.545) is 75 mm. long. The 
rostrum (Pl. XVIII. fig. 16) reaches to the extremity of the an- 
tennal scales. The upper border, which is slightly arcuate above 
the eyes, carries 7 teeth; the 2nd tooth, situated above the frontal 
border, is a little longer than the four following, which are sub- 
equal; the foremost tooth is longer than the preceding and almost 
twice as far distant from the penultimate tooth as from the 
slightly upturned tip. The two teeth of the lower margin are 
situated below the 5th and the 6th of the upper border. The chele 
of the 1st pair are barely half as long as the carpus. There is but 
one leg of the 2nd pair (fig. 17); this leg has a mach slenderer 
shape than those of the male from Christmas Island (confer the 
measurements). The carpus is, at the distal end, comparatively 
only half as thick as in that specimen. The ambulatory legs 
(fig. 19) are also mach slenderer than in the male from Christmas 
Island. 
I do not wish to go further into this question, but, at first 
sight at least, it appears probable that under the name of Pal. lar 
Fabr. two different species are confounded. The following may, 
however, be added. 
Specimens lying before me from a river near Mbawa in the 
island of Flores (de Man, J. c. 1892, p. 449) belong certainly to 
the same form as the male from Christmas Island. A male 
71 mm. long fully agrees with it, as regards the shape and the 
characters of the rostrum and of the ambulatory legs (the 2nd 
