s RIJKS MUSEUM VAN NATUURLIJKE HISTORIE — LEIDEN. 249 
42 
43 
Sides of carapace parallel, upper surface very much flattened, 
smooth and shining; postfrontal lobes much prominent, sharply spi- 
nulous at their anterior margin. Ses. polita de Man. 
Sides of carapace convexly arched or divergent posteriorly, surface 
uneven. , 43 
Chelipeds and walking legs much hairy; meropodites of the latter 
very broad, their length being only 1'/, times their greatest breadth, 
which is lying at the distal end. Postfrontal lobes very slightly pro- 
nounced, each of them tufted by long hairs. Very small species, 
‘breadth of carapace about 7—8 mm. Ses. pontianacensis de Man. 
++ 
45 
46 
47 
Chelipeds not hairy at all, at least not at the outer surface of 
wrist, palm and fingers. Postfrontal lobes well indicated, sometimes 
rounded off at their anterior margin. . 44 
Sides of carapace convexly arched in their anterior half 
only, concave in their distal half; anterior epibranchial tooth with 
a very long lateral margin; second epibranchial tooth well indicated, 
prominent. Adult co with two black, blunt spines at upper border of 
mobile finger. Ses. smithi H. Milne-Edwards. 
Sides of carapace convexly arched along their whole course, 
or divergent posteriorly ; second epibranchial tooth, if present at all, 
very minute. Upper margin of movable finger in adult © often with 
a longitudinal row of transverse tubercles or rounded knobs. —- 45 
Greatest breadth of carapace lying at the level of the posterior 
epibranchial teeth; sides of carapace rather regularly convexly arched. 46 
Greatest breadth of carapace lying al the level of the penultimate 
part of legs; sides of carapace straight or even slightly concave, but 
always more or less divergent posteriorly. — 47 
Carapace flattened; inner postfrontal lobes nearly 3 times as broad 
as the outer ones. Inner angle of wrist of cheliped produced; upper 
margin of palm with a coarsely serrulate longitudinal crest. Dactyli 
of walking legs thickly tomentose, as also the outer border of the 
propodites. Ses. rotundata Hess. 
Carapace more vaulted; inner postfrontal lobes nearly as broad as 
the outer ones. Walking legs with only some few isolated hairs. 
Ses. cruciata Bürger. 
Upper border of mobile finger of cheliped with a rather sharp, 
