29 





XL O/i the Characters ofthmjeniis Atya of Leach, 

 with a Description of me-^pe^(^s. 



ATYA, 

 Atya, Leach. 



Antenna interiores setis duabus in eadem linea horizontali 



insertis instructae. 



exteriores corporis fere longitudine infra inferiores 



insertae, ad basin squama magna externe uni- 



dentata instructas. 



Pedipalpi externi articulo ultimo breviore ; flagrum elon- 



gatum. 

 Pedum paria duo antica aequalia articulo penultimo brevis- 

 simo : articulo ultimo fisso ; laciniis aequalibus apice 

 ciliis longis instructis : par tertium magnum inaequale 

 ungue brevissimo instructum : paria duo postica ungue 

 mediocri instructa. 

 Cauda lamellis exterioribus bipartitis. 



The very curious structure of the four anterior pairs of 

 legs will at once distinguish this from any other genus yet 

 discovered. 



It forms a peculiar subdivision of the Shrimp family, 

 and one species only is known. 



Sp. 1. Atya scabra. 



Tab. 131. 



A. rostro carinato trifido : dente medio longiore, pedibus 

 sex posticis scabris. 



