48 



Distribution : Red Sea and East coast of Africa, Persian Gulf, Ceylon, 

 Coromandel coast, Andaman Sea, Malay Archipelago. 



711. Port Blair, Andamans. Wood-Mason Coll. 



8113 

 6 • 



7K5 



10 ■ 



Mergui. Anderson Coll. 



Persian Gulf. F. W. Townsend. 



Cryptodromia, Stimpson. 



Crj/pfodromia, StimpaoD, Proc. Acad. Nat. Sci. Philad., 1858 (1859), p. 225. Miers (65), Haawell (38), 

 Henderson (42), Ortmann (84), Thomson (102), Alcock (3). 



Epidromia, Kossmaun, Raise roth. Meer. Crust., p. 69. 



For references see J. A. S. B., LXVIII., pt. 2, 1899, p. 140. 



As Dromia, but the legs, or at least the first two pairs of them, as well as 

 the chelipeds, are nodular or verrucose. The ridges that define the efferent 

 branchial channels are distinct. The chelipeds may carry a small epipodite, but 

 not in any of the Indian species. 



All the species are small. 



Distribution. : Indo-Pacific, from the Red Sea, East coast of Africa, and 

 Mauritius, eastwards through the coasts of India and the East Indian Archi- 

 pelago, to China and Japan and Australia and New Zealand. Occasionally found 

 in moderate depths up to 150 fathoms, or even nearly up to 500 fathoms. 



Kvij to the Indian species of Cryptodromia. 



Carapace smooth (noii-gianular) : — 



1. No .spines on dorsal surface of carapace : — 



i. Front cut into 3 teeth, all of which are plainly vibible in a 

 dorsal view : autero-lateral borders of carapace witli 

 inoie than one tooth : legs nodular : — 



((. Antero-lateral borders with 3 teeth (not including 

 I lie outer orbital angle and some teeth on the 

 subhepatic region) ... ... ... C. pileifera. 



h. Antero-lateral borders with 2 teeth (not including 

 the outer orbital angle, etc.) : — 



tt. Regions of carapace well defined : no 

 ; tubercle on the surface of the maxilli- 



peds ... ... ... C. canalicnhita. 



r p. A pearl-like tubercle in the middle of the 



exposed surface of the merus of the 

 external niaxillipeds ... ... 0. liiilliferu. 



