202 Garoinological Fauna of India. 



those on eifclier side dentiform : 

 carapace crisply granular, the 

 granules of good size : cheli- 

 peds stoutish, not quite twice 

 the length of the carapace even 

 in the adult male : hand short : — 



a. Front not projecting be- 

 yond the dentiform 

 ends of the walls of 

 the branchial channels : 

 hand about half length 

 of carapace : fingers 

 about two-thirds length 



of hand M. affinis. 



b. Front shaped much as 

 in Leucosia, projecting 

 well beyond the free 

 edge of the branchial 

 channels : hand hardly 

 two-fifths the length of 

 the carapace : fingers 



as long as the hand M. brevimana. 



2. Side wall of hepatic regions convex, not 

 distinctly facetted in the adult : later- 

 al margins of the carapace full, and 

 not defined by any beaded line : arma- 

 ture of the posterior margin consist- 

 ing of three petaloid lobules : fingers 



longer than the hand M. damleyensis. 



[ II. Carapace subcircular, with five marginal spines 



and spinules at its posterior end M. pentacantha. 



(probably the 

 young of M. 

 fugax)]. 

 III. Carapace narrowly and acutely oval (longitu- 

 dinally) its shape recalling that of Raninoides, 

 -without any marked notch between the hepatic 

 and branchial regions M. elegans. 



41. Myra fugax, (Fabr. ) 



Cancelhis anatum tertius, Rumph, Amboin. Kariteitk. I. 27, pi. x. fig. C. 

 Cancer punctatus, Herfcnt, Krabben, I. ii. 89, pi. ii. figs. 15, 16. 

 207 



