240 
ZOOLOGY OF THE FAR EAST. 
pairs is about five-sixths the length of the propodus, that of the last pair is longer, 
almost equal to the length of the propodus. On all the legs there are conspicuous 
slender spinules. not very thickly set, on the carpus, propodus and dactylus ; each 
spinule is dark brown basally and white distally. 
The abdomen of the male is broad and closely resembles that of S. sylvicola. 
In colour the carapace of the specimens is of a very dull reddish brown ; the 
chelipedes are pale yellow suffused with pale red on the carpus and palm ; the walk- 
ing legs are deep brown with a fine mottling and dark chromatophores are thickly 
sprinkled on the abdomen. 
The species is described from two males which yield the following measurements 
(in mm): — 
Length of carapace 
9-8 
97 
Breadth of carapace between outer orbital angles . . 
9-8 
9-8 
Breadth of carapace at base of 3rd walking legs 
9-8, 
9-8 
Breadth of front . . 
5-0 
5-0 
Length of penultimate walking legs 
22-0 
21-5 
Length of merus of penultimate walking legs 
7-3 
Breadth of merus of penultimate walking legs 
2-0 
1-9 
The species differs from all the allied forms described by de Man in his Report 
on Max Weber's expedition to the Dutch East Indies in the shape of the carapace, 
which is not wider behind than in front ; it is allied to 5. sylvicola, from Sumatra, but 
in addition to the form of the carapace, differs in the tuberculation of the chelae, 
in the blunter epibranchial teeth and more slender merus of the walking legs. It is 
also closely related to S. ocypoda, Nobili from Sumatra, from which it differs in the 
form of the carapace, in the number of denticles on the dactylus of the chela and 
in the proportions of the meropodites of the walking legs. Its nearest ally, however, 
is perhaps 5. aranea, Nobili,* from Nias, in which the carapace is described as "per- 
fettamente quadrato " ; this species is smoother than 5. foxi, the tuberculation on the 
outer face of the chela is obsolete inferiorly and the merus of the walking legs is less 
slender. 
The specimens obtained by Mr. Buxton, the types of the species, were found on 
Gunong Raya in Langkawi I, at a height of 2000 ft. They were collected in moist 
places under stones or rotten wood at some distance from any stream. At Mr. Bux- 
ton's request I have named the species after Mr. Fox of Langkawi I. 
The types of the species are in the Indian Museum, where they bear the number 
9457/10. 
Sesarma sp. ? 
I do not venture to name three small specimens of Sesarma obtained by Dr. Annan- 
dale on Penang Hill in the island of Penang at a height of 1200 ft. The specimens are 
all young ; the carapace of the largest is only 7 5 mm. in length and its chelae do not 
appear to have assumed their adult form. 
1 Nobili, Ann. Mtis. Civ. Genova (2), XX, p. 513. 
2 Nobili, ibid., p. '^10. 
