Crustacea Decapoda and Stoniatopoda. 
253 
the oblique carinae on the branchial regions are exceedingly strong and in the middle 
line 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 locality as Ehalia heterochalaza , in water of 
specific gravity i-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, 9 5 mm. in 
length, was obtained a few years ago by Dr. J. T. Jenkins, and from Singapore (lyan- 
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 
well 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 oblique lines which run inwards from the poster o-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-o mm. in length. One was taken along 
with the examples of the two preceding species near Singgora, in water of specific 
gravity 1004 ; 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 Lem Ngob on the east- 
ern side of the Gulf of Siam. 
Family DORIPPIDAE. 
Genus Dorippe, Fabricius. 
Dorippe astuta, Fabricius. 
1896. Dorippe astuta, 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 1004 (corrected). They were found on a bottom 
of mud and dead shells at a depth of 4I 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. 
