304 Carcinolo(jic(d Fauna of India, 



Front proper about a third the greatest breadth of the carapace, 

 remarkably prominent, as faintly as possible notched in the middle 



line. 



Orbits shallow, their upper border sinuous but entire, their major 

 diameter about half the width of the front. Eyes small. 



Antero-laterai borders of carapace not two-thiids the length of the 

 postero-lateral, moderately arched, armed with two pro-curved .«ipine- 

 like teeth, and with a small blunt denticle jnst behind the ill-defined 

 orbital angle. 



Chelipeds twice the length of the carapace ; tlie arm has a denticle 

 beyond the middle of the upper border, and there is a strong spine — 

 with sometimes a secondary spinule at its base— at the inner angle only 

 of tlie wrist. 



The legs are long and have the dactylus well plumed and the 2 

 preceding joints more scantily hairy : the third pair, which are slightly 

 the longest, are nearly 2| times the length of the carapace : though the 

 terminal joints of the fourth (last) pair are compressed they are not so 

 subfoliaceous as those of C. longimamis. 



In the Indian IMuseum are 20 specimens from the Andamans 220 to 

 290 fathoms and off Travancore, 430 fathoms. 



In the largest specimen the carapace is 14 millim. long and 17 

 millim. broad. 



In spirit the colour is ^vhite with a faint pink tinge, the fingers 

 blackish-brown. 



7. PSEUDORHOMBILA, Edw. 



Pseudorhomhila, Mihie Edwards, Hist. Nat. Crnst. IT. .50, and Ann. Sci. Nat., 

 Zool., (3) XVIII. 18.52, p. 164. 



The only particulars in which Pseudorhomhila differs from Carclno- 

 pla.v ai-e that the regions of the carapace arc better defined, that the 

 square-cut front is more distinctly bilobed, that the supra-orbital border 

 has two distinct sutures, and that the dactyli of the last pair of legs are 

 styliform. 



The only specimen in the Indian Museum that is perhaps referable 

 to this genus is too small and too much damaged for description : it is 

 from the Andamans. 



LiBTSTES, A. M. Edw. 



Libystes, A. Milne Edwards, Ann. Soc. Entoni. France, (4) VIT. 1867, p. 2S,5, and 

 Nouv. Archie, du Mus. IV. 1868, p. 84. 



This genus unites Carchwj^lax with Gatoptrus. It chiefly differs 

 646 



