21 
28 
29 
30 
31 
’s RIJKS MUSEUM VAN NATUURLIJKE HISTORIE — LEIDEN. 245 
Upper border of movable finger of cheliped with a longitudinal 
row of spinules or tubercles. 27 
Distance between external orbital angles larger than that bet- 
ween anterior epibranchial teeth. _ 28 
Distance between external orbital angles equal to that between 
anterior epibranchial teeth. 31 
Upper margin of movable finger of cheliped armed with a longi- 
tudinal row of 5—6 spinules, at its proximal half only; outer surface 
of palm nearly smooth, punctate, near upper border sharply granulated 
and provided with obliquely-longitudinal and discontinuous lines of 
granules. Ses. vicentensis Rathbun. 
Upper margin of movable finger of cheliped armed with a longi- 
tudinal row of 9—13 spinules or tubercles (less in ©), occupying the 
larger part of the finger; outer surface of palm granulate. 29 
Upper border of movable finger of cheliped with 12—13 knob-like 
tubercles (somewhat less in Q), each of which tubercles is surrounded 
by an ovoid patch. Eggs of © few in number and large (subg. (reo- 
sesarma de Man). Species living on Java. Ses. nodulifera de Man '). 
Upper border of movable finger of Hp with a row of acute 
spinules. 30 
Carapace finely granulate, flattened. Upper border of 
movable finger of cheliped at inside with a row of 9—10 acute tubercles 
(somewhat less in © and in young specimens). Dactyli of walking legs, 
‘save in the case of the last pair, shorter than the preceding joints. 
3 Ses. aranea Nobili. 
Carapace much more strongly granulate, rugose, con- 
vex in longitudinal direction. Upper border of movable finger 
of cheliped with a row of 13—15 acute denticles. Dactyli of walking 
legs about as long as preceding joints. Ses. ocypoda Nobili ?). 
Upper border of movable finger of cheliped with a longitudinal 
row of 6—7 acute denticles. Posterior margin of penultimate segment 
1) The subspecies conferta Ortmann is distinguished by more numerous and more crowded 
tubercles on the movable finger. 
2) The subspecies gracillima de Man is distinguished by less numerous spinules on the 
movable finger, the proximal 4—5 of which are not directed obliquely forward, but perpendicu- 
larly to the long axis of the finger. Besides, the emargination of the front is deeper and narrower. 
