's RIJS MUSEUM VAN NATUURLIJKE _HISTORIE — _ LEIDEN. 251 






3. Parasesarma '). 
1 Posterior border of meropodites of walking legs with some spines 
near the distal end. 2 
Posterior border of meropodites of walking legs without spines. 6 
2 Fingers externally covered with woolly tufts of dark brown hair; 
upper border of movable finger with a row of 12 transverse tubercles. 
Q ips * . 
Ses. batavica Moreira. 
(= Ses. barbimana de Man nec Cano). 
Fingers glabrous, without hairs. Margins of carapace rather strongly 
convergent posteriorly. 3 
€ 
3 Upper border of palm of cheliped (in ¢’) with 2 
pectinated ridges, that near the base of the movable finger being 
the longer. Carapace hairy. t 
Upper border of palm of cheliped (in ¢’) with more than 3 oblique 
pectinated ridges. Carapace glabrous and shining. 5 

4 Distance between external orbital angles 1'/, times the length of 
the. carapace in the median line. Upper border of movable finger of 
cheliped with a row of 11—13 transverse tubercles. Walking legs 
very short and thickened; carpo- and propodite nearly as broad 
long; dactyli very short, strongly curved. Ses. edamensis de Man. 
Distance between external orbital angles only slightly more than ° 
length of carapace in the median line. Upper border of movable finger 
of cheliped smooth, with a sharpened, longitudinal keel. Walking legs 
moderately long; dactyli very slender. Ses. vestita Stimpson. 
4) Carapace smooth, punctate; sides not much convergent posteriorly ; 
a trace of an anterior and even of a posterior epibranchal tooth may 
be seen on either side behind the external orbital angle *). Upper 
border of palm of cheliped (in ©) with two larger pectinated ridges 
and no less than 7—8 smaller ones; upper border of mobile finger 
with a longitudinal row of 13—14 transverse ridges. Meropodites of 
walking legs with 4—5 teeth at the posterior margin near the carpal 
joint, diminishing in size distally. Ses. aundersoni de Man. 
1) The key to this subgenus has been constructed in the main after that of de Man (Notes 
Leyden Museum, v. 12, 1890, p. 97, and Zool. Jahrb. Syst., Bd. 9, 1895, p. 181). Of course 
the species described after the latter date are inserted. 
2) By this character the species is approached to the subgenus Chiromantes, but here the 
epibranchial tooth is prominent and acute. 
