284 MANUAL OF NATURAL HISTORY. 



weedy, and sandy bottoms, darting rapidly above 

 the surface in straight lines, leaving turbid tracks, 

 or in shallow bays, springing backwards through 

 the water. 



In Chili and Patagonia, the Horseman -Crabs 

 (Ocypodce) will be found, coursing along the sands 

 in a sidelong manner, and rapidly disappearing in 

 holes of the sand when almost caught. Many other 

 interesting genera will also here be met with, as 

 Hepatus, Leucippe, Epialtus, Eurypodius, Atelecy- 

 clus, Platycarcinus, and Grapsus or the Painted- 

 Crabs, which, active, bold, and predaceous, will be 

 seen running over the rocks near the sea. 



If he visit the shores of Madagascar, our tra- 

 veller-Carcinologist must look for Mencethius, Xan- 

 tho, Ranina, Ixa, besides the Horseman and Call- 

 ing-Crabs, Calappa, Pisa, and others ; and the same 

 forms will be met with at the Cape of Good Hope, 

 in the Isle of France, and at the Seychelles. 



In India and New Guinea, the Decapodous Ege- 

 ria, Dodea, Pericera,&n.d. Varuna, and the Swimm- 

 ing-Crabs, Thalamita, Lupa, Pseudocarcinus, and 

 Matuta, must be hunted ; on gravelly floors, and on 

 submerged beds of broken shells, the Long-armed 

 Lambri must be sought for ; under stones, turned on 

 the beach at low water, Alope and Alpheus, snap- 

 ping loudly the pincers of their fore-legs, will be dis- 

 covered ; the fresh-water Sesarmce frequenting the 

 running brooks ; the Telescope-eyed Crab (Ma- 

 crophthalmus) burrowing in the sand; the Moun- 

 tain-Pirate (Birgus) inhabiting holes in the hills ; 



