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ZOOLOGISCHE MEDEDEELINGEN —-DEEL 111. 
Inner infra-orbital lobe usually meeting the lateral processus of 
the anterior margin of the front, in such a way that the frontal 
processus in outer view is concealed by the orbital lobe; the contact 
is not always present, and a more or less wide gap between the 
antennar cavity and the orbit exists in this case; width of front 
always half the greatest breadth of the carapace. 
Metases. aubryi. A. Milne-Edwards. 
C. Sarmatium '). 
1 Sides of carapace with one or two epibranchial teeth behind the 
external orbital angle. 2 
Sides of carapace entire, not toothed at all. 
Sarm. integrum (A. Milne-Edwards). 
2 Palm of cheliped smooth at outer surface. 3 
Palm of cheliped roughly granulate at outer surface. 4 
3 -Carapace smooth, regions indistinct. Palm of cheliped (of ) at 
upper surface with 6—7 transverse, parallel crests; upper border of 
movable finger with 4 short spines in the «7, none in the ©. 
: Sarm. crassum Dana. 
Carapace areolate, regions distinct (at least the mesogastric area). 
Palm of cheliped at upper surface quite smooth, and the same is 
true for the upper border of the movable finger, in both sexes; inner 
surface of palm with a transverse row of granules. 3 
Sarm. inerme de Man. 
4 Inner surface of palm of cheliped without transverse row of granules. 
Sarm. indicum (A. Milne-Edwards) ®). 
Inner surface of palm of cheliped with transverse row of granules. 5 
5 Anterior margin of front with a deep median emargination, width 
of front between eye-stalks about half the distance between external 
orbital angles. Superior border of arm of cheliped without subdistal 
tooth; upper border of movable finger with 4—5 spines. Meropodites 
1) This key has been based upon that given by Kingsley in his revision of the Grapsidae 
(Proc Ac. Nat. Sc. Philadelphia, 1880, p. 212), and the- new species have been inserted. 
2) There is a subspecies malabaricum Henderson of this species, but I have had no occasion 
to study its main characters. 
