842 



STOMOrODA. 



MYSID^. 



MYSID^E. 



Mysis Grijithsia-. Mlhi. 



Sjxcijic Character. — Middle plate of the tail lanceolate, constricted near ilie 

 base, apex entire, slightly obtuse ; rostrum lanceolate, extending beyond the 

 penultimate joint of the peduncle of the internal antennas ; antennal scale scarcely 

 longer than the rostrum. 



Mysis rostratus 9 Guer. Iconogr. Crust, t. xxiii. f. 2. 



Carapace much elongated, and more slender than in 

 either of the former species, terminating forwards in a 

 long, acute, lanceolate rostrum, extending beyond the 

 penultimate joint of the peduncle of the internal antennae, 

 which is itself longer and more slender than in the former 

 species. Scale of the external antennae shorter than the 

 peduncle of the internal, rounded at the apex, with a 

 small external spine, ciliated only on the inner margin. 

 Abdomen very slender and tapering; middle plate of the 

 tail lanceolate, somewhat constricted near the base, the 

 apex entire, very slightly obtuse, the margins spinulose ; 

 the iimer lateral lamella very narrow, tapering regularly 



