ZOOLOGISCHE MEDEDEELINGEN — DEEL III. 



vergent posteriorly ; numerous tufts of hair on anterior parts of cara- 
pace; anterior epibranchial tooth well developed, acutely prominent; 
a second very small one may be present. Pectinated crest at upper 
border of palm of cheliped consisting of about 60 teeth; upper border 
of movable finger very regularly and transversely milled by minute 
grooves; in this way a longitudinal row of about 60 transverse, horny- 
coloured tubercles is formed; inner surface of palm with transverse 
granulated crest, that is very prominent in ©. Large species, distance 
between external orbital angles reaching to about 40 mm. 
Ses. taeniolata White '). » 
Upper border of palm of cheliped with longitudinal row of gra- 
nules, that of movable finger either regularly transversely milled or 
with a longitudinal keel (near base of finger) or groove. Walking 
legs very robust, meropodites foliaceous, their breadth being about 
half their length. Large species, distance between external orbital 
angles 30—40 mm. i 
These characters not combined. 9 
Upper border of movable finger with about 25 transverse grooves, 
leaving the distal third of the finger free. Sides of carapace distinctly 
convergent posteriorly. Ses. palawanensis Rathbun. 
Upper border of movable finger with a longitudinal keel near base 
or a groove. Sides of carapace (at least in adult specimens) nearly 
parallel. 8 
Upper border of movable finger with a longitudinal keel. 
Ses. lafondi Jacquinot et Lueas. 
Upper border of movable finger with a longitudinal groove, in 
which 9—10 small tubercles are placed. Ses. tetragona (Habricius). 
Posterior margin of meropodites of walking legs with one larger 
tooth, and between this and the carpal joint 2—3 smaller teeth. Sides 
of carapace much convergent posteriorly. Wrist and outer surface of 
palm of chelipeds covered with a woolly fur. Small species, distance 
between external orbital angles 5 mm. Ses. minuta de Man. 
Posterior margin of meropodites of walking legs always without 
any tooth, at most faintly crenulate. 10 

1) The subspecies crebrestriata described by me in this paper (p. 203) may be distinguished 
especially by the number of the transverse tubercles at upper border of movable finger (85—90), 
that 
are much smaller and narrower than those of the genuine ¢aeniolata. | have already refer- 
red (l.c.) to the probability of this subspecies being the ~ of Ses. Zafondi Jacquinot et Lucas. 
