1900.] A. Alcock — Carcinological Fauna of India. 315 



far end of the upper border of the arm : inner angle of wrist dentiform. 

 Legs unarmed. 



A single female from Mergui : its carapace is 6 millim. long and 

 9 millim. broad. 



15. Litochira setosa (A. M. Edw.). 



Carcinoplax setosa, A. Milne Edwards, Nouv. Archiv. da Mus. IX. 1873, p. 267, 

 pi. xii. fig. 2 : de Man, Archiv f. Naturges. LIII. 1887, i. p. 349, and Journ. Linn. 

 Soo., Zool., XXII. 1887-88, p. 93. 



The only essential difference between this species and the preceding 

 is that the carapace here is a little more depressed and that the antero- 

 lateral borders are cut into 2 blunt teeth besides the blunt orbital angle. 

 The size is about the same. 



In the Indian Museum are 16 specimens, from the Andamans and 

 Mergui. 



16. Litochira ang-ustifrons, n. sp. 



Carapace, length a little more than two-thirds the breadth. Fron to- 

 orbital border nearly five-ninths the breadth of the carapace in extent. 

 Antero-lateral borders arched, cut into 4 teeth (including the outer 

 orbital angle) the edges and dorsal, surf ace of which are granular: the 

 first 3 teeth are sharply truncated, the fourth is subacute. 



Chelipeds, in the adult male, nearly twice the length of the carapace 

 and hardly shorter than the legs ; in the female much less than twice 

 the length of the carapace and markedly shorter than the legs. There 

 is a lobule near the far end of the upper border of the arm, and the 

 inner angle of the wrist is subacute. 



Two specimens, from Bombay and Karachi. The carapace of the 

 larger is 13 millim. long and 18 millim. broad. 



This species appears to be closely related to Pilumnoplax cilia tus 

 Stimpson. 



17. Litochira Beaumontii, n. sp. 



Carapace, length more than two-thirds the greatest breadth, nearly 

 square. The extent of the fronto-orbital border is hardly less than the 

 breadth of the carapace. The antero-lateral borders are hardly arched 

 and are armed with 3 sharp spinules — including one at the outer orbital 

 angle. 



The chelipeds are much shorter than the legs and, like them, are 

 unarmed, except that the inner angle of the wrist is dentiform. The 

 longest (penultimate) pair of legs are more than 2^ times as long as the 

 carapace. 



