128 DR. J. G. DE MAN ON THE PODOPHTHALMOUS 
similar to those of J. quadratus, but they are a little longer, 
more compressed and more carinate. The palm is longer than 
its greatest vertical depth, at the articulation with the mobile 
finger, the length being in proportion to that depth as 15:11. 
The hands are much compressed ; the outer surface of the palm 
appears smooth to the naked eye; the upper margin is carinate 
and granular, and the somewhat rounded under margin is also 
a little granular. When the outer surfaces of the palm and 
fingers are examined under a sufficiently powerful lens, they 
appear to be uniformly covered with innumerable minute 
granules. The inner surface of the palm is densely covered with 
a tuft of hair, and armed a little before the middle with an 
acute spiniform tooth. ‘The cephalothorax of all other species, in 
which the inner surface of the hands is spiniferous, is much more 
enlarged, being at least twice as broad as long. The fingers 
resemble those of J. quadratus. The lower margin of the 
immobile finger is in a straight line with the lower margin of the 
palm, and its outer surface is longitudinally grooved near the 
under margin. The upper or inner margin presents a strong 
longitudinal tooth, occupying its proximal half, and_ this 
tooth is minutely crenulate or denticulate above; two or three 
very small teeth are also to be observed between the horny ex- 
cavated tip and the large proximal tooth. As in I. quadratus, 
the fingers, when closed, meet only towards their apices, there 
being a hiatus between them; the inner margin of the mobile 
finger has a small, quadrangular, minutely crenulate tooth near 
its base, and a few minute teeth before the excavated tip. The 
spoon-like excavated tips are somewhat hairy. 
The chelipedes of the female are, as usual, much smaller than 
those of the male. Their arms have entire margins, the upper 
and anterior margins being clothed with rather long hairs. The 
‘“‘musical crest”? is wanting. The wrist is also somewhat hairy 
on its inner surface. The small hands, including the fingers, are 
nearly thrice as long as high. The palm near its lower margin 
presents a longitudinal groove, which extends upon the immobile 
finger; the upper margin of the palm and of the mobile finger 
are longitudinally grooved, the grooves reaching to their tip. 
The fingers are scarcely longer than the palm, and their exca- 
vated tips are hairy. The inner margins of the fingers present 
only afew very minute teeth, so that they appear entire to the 
naked eye. The inner surface of the palm is unarmed. 
