39 
40 
41 
ZOOLOGISCHE MEDEDEELINGEN — DEEL 11. 

limited outwardly by a smooth, blunt ridge and inwardly by an un- 
even granulated margin” (Rathbun); inner surface of palm with a 
transverse row of granules. Ses. aequifrons Rathbun. 
Lateral margin of external orbital angle shorter than that of 
anterior epibranchial tooth. Small species, breadth of carapace about 
10—13 mm.; in Celebes. 40 
Lateral margin of external orbital angle at least equal to or 
longer than that of anterior epibranchial tooth. Inner angle of wrist 
of cheliped dentate. Large or middle-sized species, breadth of carapace 
20—40 mm. 41 
Meropodites of walking legs very broad, club-like, less than twice 
as long as broad, with very convex anterior border, and the greatest 
breadth lying near the distal end. Ses. clavicruris Schenkel. 
Meropodites of walking legs slightly more than twice as long as 
broad, with feebly arcuate anterior border. Eggs of Q large and few 
in number (subg. Geosesarma de Man). Ses. celebensis Schenkel. 
Anterior margin of front scarcely emarginate in the middle; post- 
frontal lobes in a straight line, the outer lobes being not more ad- 
vanced than the inner; distance between external orbital angles al- 
ways distinctly more than length of carapace in the median line. 
Superior border of arm of cheliped with an obtuse prominence near 
the distal end; outer surface of palm with many confluent and irre- 
gular wrinkles (at least in o’), inner surface without transverse row 
of granules; mobile finger at outer surface without concavity near 
base. Middle-sized species, breadth of carapace about 20 mm. 
Ses. modesta de Man. 
Anterior margin of front with a narrow and deep emargination ; 
external postfrontal lobes slightly more advanced than the median ones 
(at least in adult specimens); distance between external orbital angles 
not rarely equal to or even less than length of carapace in the 
median line. Superior border of arm of cheliped with an acute tooth 
near the distal end; outer surface of palm strongly granulate, inner 
surface with a transverse row of granules; outer surface of immobile 
finger with a large depression, that of mobile finger with a narrow, 
but rather deep, longitudinal. concavity near base. Large species, 
breadth of carapace reaching to nearly 40 mm. 
/ Ses. impressa H, Milne-Edwards. 
