210 ZOOLOGISCHE MEDEDEELINGEN — DEEL III. 


two distinet coneave portions at consirable distances from each other, one 
immediately behind the external orbital angle and the other about in 
the middle of the lateral margin, between them the margin is feebly 
bulging out and therefore not straight. The branchial regions are very 
much sloping, so that the lateral margin of the carapace, if looked at 
from the side, shows a considerable downward curve in its hinder part. 
I shall not describe at full length the chelipeds, as these offer in the Q 
very little characteristics, unlike those of the co’. We know that in the 
latter sex the upper border of the palm is provided with a longitudinal 
pectinated crest, consisting of about 25—30 juxtaposed teeth, but this 
crest is replaced in the 9 (de Man) by a row of extremely minute gra- 
nules. I have seen only a few isolated tufts of hair on the outer surface 
of the palm, near the upper border, else the outer surface of the palm, 
like the inner, is perfectly devoid of hairs. At the inner surface of the 
palm there is no trace of the transverse row of granules, so conspicuous 
in the ©’, and at the upper border of the mobile finger I have found in 
my young Q scarcely any trace of transverse tubercles, which, according 
to de Man, are present in the adult Q, in the number of 11—12, though 
much less developed than in the other sex. 
The meropodites of the walking legs are very much hairy, with iso- 
lated tufts of hair on the upper surface, but the under surface is enti- 
rely hairless, at: least in the central parts, a character, that I have 
not found in de Man’s description; the meropodites themselves are not 
much foliaceous, and the anterior margin bears at its subdistal end only 
a rectangular tooth, not an acute one. The dactyli, the tip of 
which is much pointed and devoid of hairs, are nearly straight, and 
always shorter than their respective propodites, those of the penultimate 
pair of legs being the longest. 
Dimensions: 
Distance between external orbital angles . . . . 10.5 mm. 
Greatest ‘breadth ‘of carapace 2 me>s 2: hcg eee eo 
Length: “of carapace’. 5). os eye: oO ee 
Breadth of front, 2". Goss ak ee aa 
Height of front. 52) wae oR pes et Soe Os Sone Bake ane a 
Pestonior margin of renee oe iets So Acy een SOc aS 
Length of meropodite | : ht se aot 
Breadth of meropodite J GF spenwlelmaaie angie Queer DAO nly 
Length of carpo- propodite : ; : 7.5 
Shs eae ai P o of penultimate pair. sah 
Breadth of propodite f | 175, 
1Or 
Length of dactylus | een ALTO: be, 
