338 The Rev. L. Guilding on some West Indian Crustacea. 



Atya. Leach Zool. Misc. 



1. Atya scabra. 

 Atys scaber. Leach in Linn. Trans, ii. p. 345. 



I have only introduced this genus to take notice of the habitat 

 of the species which was found unmarked in the British Museum, 

 and which stands as the type. It occurs in incredible numbers 

 in the mountain streams of this island in company with Palcemon 

 Carcinus, where they are caught by the Negroes in baskets for 

 the market. 



St. Vincent, August 1, 1823. 



XVIII. Ob. 



