LYSIAxXASSA LONGICOIINIS. 



85 



AMPHIPODA. 



NdTATORlA. 



LYSIANASSIDEti. 



LYSIANASSA LONGICORNIS. 



Specific character. Inferior auteunw longer than tlie animal in the male> 

 but a little shorter in the female. 

 Length }i in. 



Lijsianussa luiKjicornls. Lucas, Expl. Sei. Algerie Zool. i. Crust, p. 53, pi. 



5, fig. 2. Spence Bate, Cat. Amph. Crit. Mus. 

 p. 70, pi. xi. fig. 2. Ann. Nat. Hist. 2ucl Ser. 



XX. p. 525 (Jan. 1858.) 

 Li/siunassa Chausica. Spence Bate, Ann. Nat. Hibt. (1857) v. xix. p. 1:38. 



White, Pop. Hist, Brit. Crust, p. 108, (not 



Alibrotus Chauslcus M. -Edwards' Hist. Crust. 



iii. 23.) 



The head has the lobes between the antennae pro- 

 duced to a somewhat down-curved point, extending fur- 

 ther forwards than the upper extremity of the head, and 

 extending beyond the basal half of the first joint of the 

 peduncle of the upper antennaa. The back is long and 

 smooth ; but tlie three last joints of the tail are suddenly 



