252 
ZOOLOGY OF THE FAR EAST. 
are provided with teeth ; both fingers are obscurely grooved and there are minute 
asperities on the upper surface of the dactylus. 
The walking legs are smooth and slender ; in those of the last pair the dactylus 
is fully one and a half times the length of the propodus. 
The sternum of the male is granular throughout, the granules being very large 
and vesiculous opposite the bases of the chelipedes. The abdomen of the male con- 
sists of four pieces, a transverse basal portion, perhaps partially fused with that 
which follows, and three distal pieces, the two last being each about half the length of 
that which precedes them. The basal breadth of the penultimate portion is scarcely 
less than half its length ; there is no median tubercle. The middle parts of all except 
the ultimate portion are closely covered with minute granules. 
The species is described from two males with carapace respectively 5 2 and 4 6 
mm. in length. 
Ebalia heterochalaza appears to be nearly allied to E. granulata (Riippell), re- 
described by Nobili in 1906,' the latter form differs, however, in the granulation of the 
carapace ; the front and orbital margins are smooth and there are enlarged granules 
on the branchial regions similar in size to those in the middle line. The front in E. 
gyanulata is also con.spicuously bilobed, there are no granules on the third maxilli- 
pedes or on the sternum and there is a large tubercle on the penultimate segment of the 
male abdomen. The last character affords a distinction between E. heterochalaza and 
E. abdominalis/ in which also the chelipedes are much longer and do not possess longi- 
tudinal granular ridges on the lower surface of the palm. From E. diadumena, 
Alcock,^ it differs conspicuously in the shallower sculpture of the carapace and in the 
presence of a well-defined hepatic facet. 
The specimens were found at a depth of about 4^^ metres, on a bottom composed 
of soft mud with many dead shells, just inside the mouth of the Tale Sap, near Sing- 
gora. They were obtained in water of low salinity, its specific gravity being about 
I "004 (corrected). 
The two specimens, types of the species, are registered under no. 9426/10 in the 
Indian Museum books. 
Genus Philyra, Leach. 
Philyra sexangula, Alcock. 
i8g6. Philyra sexangula, Alcock, Jourii. Asiat. Socy Bengal, LXV, p. 241, pi. vii, fig. 2 and 
(1899) IllusL Zool. 'Investigator' Crust., pi. xxix, figs. 6, 6^/. 
1900. Philyra sexangula, Lancliester, Proc. Zool. Soc. London, p. 765. 
A very small male, with carapace only 3 2 mm. in length, was obtained by Dr. 
Annandale. The sculpture in this individual is more clean-cut than in the larger speci- 
mens recorded by Alcock. The outline of the carapace is much more sharply angular, 
1 Nobili, Ann. Sci. nat , Zool. (g), IV, p. 155, pi. ix, fig. i (1906). 
« Nobili, ibid., p. 157, pi. ix, fig. 2 (1906). 
S Alcock, Journ. Asiat. Soc. Bengal, LXV, p. 187, pi. vii, fig. 4 (1896). 
