1900.] A. Alcock — Carcinological Fauna of India. 321 



not produced : outer surface of palm smooth and polished, except for a 

 few depressed granules inferiorly. Third pair of legs not twice the 

 length of the carapace. 



In the Indian Museum is a single specimen from the Andaman Sea, 

 53 fins. 



23. Oeratoplax hispida, n. sp. 



Carapace, chelipeds and legs with a tomentose surface, and fringed 

 with longer silky hairs. 



Carapace, length a little less than three-fourths the breadth, when 

 denuded its regions (and three gastric subregions) are just distinguish- 

 able, and its surface is pitted and its lateral margins granular. Front 

 a little more than a third the greatest breadth of the carapace, its free 

 edge decidedly arched and notched in the middle line. Eyes very 

 deficient in pigment. Chelipeds (in the female — male unknown) much 

 shorter than the legs : inner angle of wrist sharply dentiform ; outer 

 surface of palm with numerous rows of vesiculous granules. Third 

 pair of legs two-and-a-half times the length of the carapace. 



In the Indian Museum is a single specimen from Palk Straits : its 

 carapace is 9 millim. long and 13 millim. broad. 



Typhlocarcinus, Stimpson. 

 Typhlocarcinus, Stimpson, Proc, Ac. Nat. Sci. Philad. 1858, p. 95. 



Carapace as in Ceratoplax. Fronto-orbital border about half the 

 greatest breadth of the carapace. Front less than a fourth the breadth 

 of the carapace, more or less distinctly bilobed. Antero- lateral borders 

 well curved, often emarginate in places : postero-lateral borders 

 parallel. 



Orbits in the usual position, completely filled by the immovable 

 eye-stalks : eyes obsolete, or nearly so. The antennules fold nearly 

 transversely, in proper pits. Basal antenna-joint short ; the flagellum, 

 which is short, stands in the orbital hiatus. 



Epistome well formed and prominent : buccal cavern completely, 

 or almost completely, closed by the external maxillipeds, the flagellum 

 of which articulates with the antero-internal angle of the merus j the 

 outer angle of the merus not produced. 



Chelipeds subequal or unequal, much more massive than the legs 

 from which they do not much differ in length : palm short deep and 

 compressed, with sharp upper and lower borders. 



Legs slender, unarmed, the 3rd pair slightly the longest : dactyli 

 styliform. 



