’s RIFKS MUSEUM VAN NATUURLIJKE HISTORIE — LEIDEN. — 255 


17 
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. 
. 
Tubereles 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 defticulate. Posterior 
margin of penultimate segment of abdomen of o& not 
yet 1'/, times the length of this segment. Species living: at 
the east coast of Africa. Ses. guttuta 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 upprr border of the movable finger are 
obliquely-transverse. 
