Crustacea Decapoda and Stomatopoda. 253 



the oblique carinae on the branchial regions are exceedingly strong and in the middle 

 Hne are five large blunt tubercles of which only traces remain in adults. The 

 chelipedes have the same proportional length as in older examples, but are practically 

 devoid of granules. 



The specimen was found in the same locahty as Ebalia heterochalaza , in water of 



specific gravity 1-004. 



The species was hitherto known from the Godaveri Coast and Persian Gulf (Al- 

 cock), from the Matlah river in the Gangetic Delta, whence a large female, 95 mm. in 

 length, was obtained a few years ago by Dr. J. T. Jenkins, and from Singapore (Dan- 

 chester) . 



Philyra olivacea, Rathbun. 



1909. Philyra olivacea, Rathbun, Proc. Biol. Soc. Washington, XXII, p. 108. 



1910. Philyra olivacea, Rathbun, Danske Vid. Selsk. Skrift. (7), nat. og math., V, p. 312, 



pi. ii, fig. 17, and text-fig. 4. 



Two specimens, both males, are in the collection ; in most respects they agree 

 weh with Miss Rathbun' s description. The posterior margin of the carapace, des- 

 cribed as trilobate in the original examples, is merely sinuous with the outer angles 

 prominent. The two obhque lines which run inwards from the postero-lateral mar- 

 gins and converge are exceedingly obscure, though visible in both specimens ; they 

 consist merely of a single row of low and widely spaced granules and might easily be 

 overlooked. 



There is a considerable difference between the two specimens in the form of the 

 angulation of the lower margin of the hepatic facet. In the smaller specimen it is 

 much the more prominent and is quite pale in colour, the remainder of the carapace 

 being a very dark grey. The larger individual is pale in colour throughout. 



The specimens are respectively 9-5 and 8-0 mm. in length. One was taken along 

 with the examples of the two preceding species near Singgora, in water of specific 

 gravity 1-004; the other was found in the bottom of a fishing boat at Patani, far to 

 the south of the Tale Sap, and had probably come from Patani Bay. 



The species was previously known only from the Coast of Dem Ngob on the east- 

 ern side of the Gulf of Siam. 



Family DORIPPIDAE. 



Genus Dorippe, Fabricius. 



Dorippe astuta, Fabricius. 



1896. Dorippe astiita, Alcock, Journ. Asiat. Soc. Bengal, LXV, p. 280. 

 A specimen with carapace about 11 mm. in length was found dead near the 

 mouth of the Tale Sap and two smaller individuals were taken in the channel opposite 

 Singgora in water of specific gravity 1-004 (corrected). They were found on a bottom 

 of mud and dead shells at a depth of 4J metres and neither of them carried anything 

 in the last pair of legs. Alcock states on the authority of Giles that it is the custom 

 of this species to carry an inhabited worm-tube. 



