Ys RIJKS MUSEUM VAN NATUURLIJKE HISTORIE — LEIDEN.  %5 
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18 
Anterior margin of front only faintly concave. 
Ses. carolinensis Rathbun. 
Anterior margin of front wavy, with three emarginations, the 
median one the larger; outer postfrontal lobes only slightly narrower 
than the inner ones; width of front between the eyes 57—60°/ of 
the distance between the external orbital angles. Ses. lenzii de Man. 
Transverse tubercles on upper border of movable finger of cheliped 
8—10, scalariform, distal slope vaulted, dull, not shining. 
| Ses. moluccensis de Man !). 
Transverse tubercles on upper border of movable finger of cheliped 
15—16, smooth, bright, horse-shoe shaped (distal portion concave). 
Ses. melissa de Man. 
4. Chiromantes. 
Tubercles at upper bordes of movable finger of cheliped numbering 
12—13, large, prominent, ,Chiton’’-like (with a smooth stripe 
along their long axis, perpendicular to the longitudi- 
nal axis of the finger; outer surface of immovable finger flat- 
tened, with a longitudinal rim; anterior margin of arm with a subdistal, 
acute prominence, which is itself denticulate. Posterior 
margin of penultimate segment of abdomen of æœ not 
yet 1'/, times the length of this segment. Species living at 
the east coast of Africa. Ses. guttata A. Milne-Edwards. 
Tubercles at upper border of movable finger of cheliped without 
a smooth stripe along their long axis. 2 
Chelipeds equal: upper border of movable finger with a row of 
12—13 tubercles, that are scalariform, flattened above and more or 
less declivous at their distal margin; inner surface of palm with 
very large spiniform granules, the largest of which are 
found in the middle of the inner surface, forming an in- 
distinct, transverse row; anterior (inner) margin of arm armed with a 
prominent, triangular tooth, the margins of which are denti- 
culate; superior border of arm unarmed; outer surface of immo- 
1) In the subspecies jamelensis Rathbun the carapace is a little narrower in proportion 
to its length and the front is also narrower in proportion to the distance between the external 
orbital angles; moreover the 9—10 tubercles on the upper border of the movable finger are 
obliquely-transverse. 
