DECA PODA. THALASSINAD.E. 



MACROURA. 



GENUS AXIUS. Leach. 



A XI us. Leach, Desmar. Latr. Edw. 



Generic Character. — External antennas nearly as long as the 

 body ; the peduncle furnished above with a small moveable spine. 

 Internal antennce with two setse nearly as long as the carapace. 

 External pedijmlps rather slender^ pediform, the joints nearly of 

 equal length. Anterior feet unequal, compressed, terminated by 

 a perfect claw ; the second pair compressed, didactyle ; the re- 

 maining pairs slender, compressed, simple, (the fifth pair the most 

 slender and most compressed.) Carapace much compressed la- 

 terally; the rostrum triangular. Abdomen compressed, rounded 

 above ; the five intermediate joints of nearly equal length ; the 

 caudal joint elongate-triangular. 



One species only of this genus is at present known. 

 The genus is truly fossorial in its form, although in some 

 respects approaching to the natatory groups of Pal^mo- 

 NiD^, Alph^ad^, 8iC. 



Q 2 



