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. 

 granulata is also conspicuously 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 4J 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 tv/o specimens, types of the species, are registered under no. 9426/10 in the 

 Indian Museum books. 



Genus Philyra, Leach. 



Philyra sexangula, Alcock. 



1896. Philyra sexangula, Alcock, Journ. Asiat. Soc. Bengal, l^XV, p. 241, pi. vii, fig. 2 and 



(1899) Illust. Zool. 'Investigator' Crust., pi. xxix, figs. 6, 6a. 

 1900. Philyra sexangula, L,ancliester, Proc. Zool. Soc. London, p. 765. 



A very small male, with carapace only y 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. (9), IV, p. 155, pi. ix, fig. i (1906). 



2 Nobili, ibid., p. 157, pi. ix, fig. 2 (1906). 



3 Alcock, Journ. Asiat. Soc. Bengal, LXV, p. 187, pi. vii, fig. 4 (1896). 



