236 
ZOOLOGISCHE MEDEDEELINGEN — DEEL II. 


the middle, separating the median lobeS one from another; inner 
and outer lobes mostly not separated at all. Carapace smooth, perfectly 
hairless, with mesogastric region scarcely indicated. Front flattened, 
not rugose, with anterior margin not emarginated. Lateral margins of 
carapace convex, areuate. Walking legs slender. Upper border of 
movable finger of cheliped smooth in full-grown specimens, with a 
row of transverse tubercles in young specimens. 
Ses. haematocheir (de Haan). 
Postfrontal lobes distinct, Carapace with regions better marked 
out, sometimes hairy. 2 
Inner edge of carpopodite (wrist) of cheliped rounded or at least 
not conspicuously prominent. 3 
Inner edge of carpopodite distinctly produced. 12 
Mobile finger of cheliped transversely striated or tuberculated. 4 
5 = i ‘ smooth or armed with longitudinally ~ 
disposed tubercles or spines. 9 
Upper margin of palm with longitudinal pectinated crest '), cons- 
isting of minute, horny-coloured teeth, close together. 
Upper margin of palm without pectinated crest, sometimes with 
a single granulated line. 7 
Mobile finger of cheliped at upper border with about 40 small 
transverse ridges. Carapace flattened, with parallel sides; distance 
between external orbital angles somewhat less than 
length of carapace (at least in adult specimens). Meropodites 
of walking legs foliaceous, breadth more than half their length; 
dactyli very short. Ses. elongata A. Milne-Edwards. 
Distance between external orbital angles exceeding 
length of carapace. Meropodites of walking legs less enlarged, 
breadth less than half their length; dactyli longer. 6 
Sides of carapace parallel; surface punctate, not hairy. Crest 
on upper margin of palm consisting of 20—25 brown, obtuse teeth, 
continued towards the carpal articulation into a granulated line; 
mobile finger at upper border with a row of 11—12 transverse tu- 

1) At least in the “; in the © the crest is often replaced by a row of obtuse granules, 
