CLASS PISCES. 169 



colour, belly silvery ; a black spot on the flank op- 

 posite the last spine of the dorsal. 



M. juscidum, Cuv., only differs from the vulgaris in 

 having a narrower body, a shorter muzzle, and a 

 higher dorsal. 



M. radiata, Spams radiatus, Osbeck, Sp. tricuspid 

 datus, Spinola, Ann. Mus. X. pi. xviii. A deep steel 

 blue, oblique blue streaks upon the cheek, blue spots 

 on the ventrals ; the dorsal still higher. 



S MARIS, Cuv. 



The fishes of this genus only differ from the maense 

 in the total deficiency of teeth in the vomer ; their 

 body is generally somewhat less elevated. Some of 

 them are found in the Mediterranean. 



S. vulgarus, Spams smaris, L., Le Picarel commun, 

 Laroche, Ann. Mus. XIII. pi. xxv. f. 17. Lead- 

 grey above, silvery beneath, a black spot upon the 

 tiank. 



S. alcedo, Riss. So called from the beautiful blue 

 with which its body is variegated. 



S. cagarella, Cuv. The body is as high as that of 

 the mama vulgaris, from which it only differs in having 

 no palatine teeth. 



Cesio, Lacep., 



Only differs from smaris in a dorsal somewhat higher 

 in front, and surrounded at its base with fine scales. 



