202 A. Alcock — Carcmological Fauna of India. [No. 2, 



those on either 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. darnleyensis. 



[ II. Carapace subcircular, with five marginal spines 



and spinules at its posterior end M. pentacantlia. 



(probably the 

 young' of 1L. 

 fugax)~\. 

 III. Carapace narrowly and acutely oval (longitu- 

 dinally ) its shape recalling that of Baninoides, 

 without any marked notch between the hepatic 

 and branchial regions M. elegans. 



41. Myra fugax, (Fabr.) 



Cancellus anatum tertius, Rumph, Amboin. Rariteitk. I. 27, pi. s. fig. C. 

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



