TO INDIAN CARCIXOLOGY. 387 



A comjmratively small species witli tliree epibranchial teeth as iu P. .sinensis, but the 

 meropodites of the ambulatory legs unavmcd. Tlie largest specimen, a female, is 21-5 mm. 

 long and 27 ram. broad. 



Listributiou. North India: Hurdwar, Purueah, AUahaliad, Jessore district {Wood- 

 Mason). 



Genus OcypoDA, Fabr. 



140. OCTPODA CER.\TOPHTHAL>IA (Pallas). 



i>. cttrutoplithulma (Pallas), Miers, Aun. ^ls.'s,. Xat. Hist. ser. 5, vol. x. p. '^7\), ])1. xvii. tig. 1 (1882). 



Rameswaram and Tuticorin [Thurstou). Common on the South Indian coast 

 {J. R. H.). 



The stridulating ridge on the inner surface of the 1iand is coarsely striated above, and 

 very hnely striated below. 



Bisti'ihution. Prom the Red Sea, E. Africa and Natal, to Japan and the Pacific 

 (Samoa, Fijis, Sandwich Is., &c.), iilso the coasts of Australia. 



141. OcTPODA MACROCERA, Milnc-Edw. 



(>. iiKirrocera (Milne-Edw.), Miers, Anu. Mag. Nat. Hist. ser. 5, vol. x. p. 381, pi. xvii. fig. .-' (188.2). 



Rameswaram, many specimens ; Tuticorin, two males (Thm'ston) ; Madras, not 

 nncommon {J. E. S.). 



This species does not appear to be common. It differs from O. ceratopJithalma iu having 

 the finger-tips of both chelipedes, but especially of the smaller one, dilated and flattened. 

 The outer surface of both hands is also more finely granulated. The colour is a reddish 

 orange, most pronounced on the chelipedes. It occurs at Madras, above high-water 

 mark, but is much less common than the nest species. 



A Rameswaram specimen (female) has the carapace 30 mm. long and 38 mm. l)road. 



DisfribnUon. India [Milne-Edwards, 3Iiers). 



142. OcTPODA PLATYTAKsis, Milne-Edw. 



O. platytarsis (Milne-Edw.), Miers, Ann. Mag. Nat. Mist. ser. 5, vol. x. p. 383, pi. xvii. tig. 5 (1882). 



Rameswaram {Thurston); Ceylon {Ilaly); Madras, very abundant (J^. R. II.). 



The stridulating ridge is narrow and tuberculate in both sexes. The dactyli of the 

 ambulatory legs are broad and flattened in adults. This is the commonest species of 

 Oci/podant Madras, where it occurs in great numbers, burrowing in tlie sand near high 

 water mark, never at any great distance from the sea. It attains a large size, and a 

 male obtained by Mr. Thurston in Ceylon has the carapace 50 mm. long and G6 ram. 

 broad. 



iJislribution. India and Ceylon {Milne-Udioards, Miers). 



143. OcYPODA CORDIMANA, Desmarcst. 



(K cordhnana (Desm.), .Aliers, Ann. ^Mag. Nat. Hist. ser. 5, vol. x. p. 387, pi. xvii. fig. 9 (188.2V 



