TO INDIAN CAECINOLOGY. 393 



Genus Sakmatium, Dana. 



IGO. SARMATiuii iNDicuii (A. Milue-Edw.), var. malabaricuji, u. (PI. XXXVI. 



%. 17.) 



Metagrapsus indicus, A. Milue-Edwards, Nouv. Arch. Mus. Hist. Nat. t. iv. p. 171-, pi. xxvi. tigs. 1-5 

 (1868). 

 Surmatium indicum, Kingsley, Proc. Acad. Nat. Sci. Pliilad. p. 213 (1880). 



Cochin, several specimens, collected by my former pupil A. G. Paul. 



I at tirst felt disposed to refer tliese specimens to 5*. pimctatum (A. Milne-Edw.), but 

 Prof. A. Milne-Edwards, to whom I sent an example, informed me that it did not belong 

 to that species, but was rather referaljle to aS*. ijidlcniu (A. Milne-Edw.). They dilfer from 

 the description and figures of the latter species in having the carapace strongly punctate 

 and the inner surface of the hand with a well-marked tubercular ridge (characters whicli 

 A. Milne-Edwards assigned to S.puiiclatmn) ; the tingers in the male have a much Avider 

 gape, and the male abdomen has the terminal segment narrower, and the basal segments 

 relatively broader, than represented in Milne-Edwards's figure. On the other hand, I have 

 compared them with specimens in the British Museum from the Indo-ilalayan seas, 

 referred by Miers to S. ■punctatum, and I find the followiug differences : — In Miers's 

 specimens the fingers in tlie male have a much narrower gape, and there is a distinct 

 ridge or carina on the outer surface of the immobile finger, running parallel to and near 

 the toothed edge, which is entirely absent from the Cochin specimens. In our specimens 

 the immobile finger is more compressed, and there is a very prominent tooth on its inner 

 margin near tlie base, while there are also prominent teeth near the apices of both fingers 

 at the posterior limit of the horny plate which is seen on each digit. 



Neither S. punctatum nor the typical form of *S'. Indiciuii are yet known to occur in 



India. 



The carapace of a male is 21'3 mm. long and 26 mm. broad, the front is 1I"3 mm. 

 broad, the right hand (including the immobile finger) is 22 mm. long and lo'5 mm. in 

 height ; the dactylus 14'5 mm. long. 



Distribution. The typical form occurs in Celebes {A. Miliie-Eihoards, De 3Iaii). 



Genus Metasesarma, Milne-Edwards. 

 161. Metasesarma Uousseauxii, Milne-Edw. 



M. Rousseauxii, Milne-Edwards, Ann. Sci. Nat. ser. 3, t. xx. p. IBS (1853) ; id. Arcli. du Mus. t. vii. 

 p. 158, pi. X. fig. 1 (1854). 



Sesarma Aitbnji, De MaB, Mergui Crust, p. 1G8 (1888), nee S. Aubryi, A. -Miluc-Edw. 



Ennore, not uncommon {J. II. IT.). 



1 sent a specimen to Prof. A. Milne-Edwards, Avho referred it to the present species, which 

 also includes examples from Mergui in the British Museum relegated to Sesarma Auhvyi 

 by De Man. The colour markings are very cliaracteristic. The deflexed portion of tlie 

 front is dark purplish brown, and immediately behind, a grey or yellow band crosses the 

 carapace transversely and is continued on to each eye-stalk ; the remainder of tlie carapace 

 shows purplish-brown mottlings. The chelipedes and legs are yellow. 



A male is 16 mm. long and 19"5 mm. broad, the front 11'3 mm. broad. 



Distribution. Zanzibar (Jlilite-Mwards) ; Mergui and Malay Archipelago (De Man). 



