344  — Storer’s Synopsis of the Fishes of North America. 
2. Thynnus coretta, Cuv. 
Corselet truncate ; scarcely emarginate behind. Second dorsal and anal finslow. Plum- 
beous above, silvery beneath. 
D.13-1| 14-8. P.31. V.1-5. A.2,12-8. C.35. Length, 11 inches. 
Gulf of Mexico, Cuv. 
Le Thon d’Amérique, Thynnus coretta, Cuy. et Vau., viii. p. 102. 
Thynnus coretta, Dexay’s Report, p. 106. 
GENUS IV. AUXIS, Cuv. 
Have, with the corselet and moderate-sized pectorals of the Tunny, the 
dorsals separated, like those of the Mackerel. 
1. Auxis vulgaris, Cuv. 
Similar in form to a Tunny, but more slender. Snout short and pointed, jaws equal. 
Teeth exceedingly small. The space between the dorsals greater than the length of the first 
dorsal. The lateral line is very small and hardly perceptible ; it is lost at the anterior por- 
tion of the corselet. Above, this species is blue; with irregular blackish-blue lines and spots 
upon the sides. The corselet is greenish blue above ; the sides and abdomen are silvery. 
D. (2). P. (2). V.(?). A.(?) C-() Length, 15 inches. 
Caribbean Sea, Cuv. 
L’Auxide commune, ou Bonitou (Auxis vulgaris, Cuv., Scomber bisus, Rar., Scomber Rochei, Risso, 
No, 165), Cuv. et VAL., vir. p. 139, pl. 216. 
2. Auxis Sloanei, Cuv. 
Snout short; mouth slightly cleft; teeth small. Space large between the dorsals. Pee- 
torals short. Second dorsal and anal higher and more pointed in proportion than in any 
other species of the genus. 
D. (2). P. @). V.@). A. (?)- C. (2): Length, (?)- 
Caribbean Sea, Suoawr. 
L’Auxide de Sloane, Scomber Sloanei, Cuv. et Vat., vil. p. 148. 
GENUS V. CYBIUM, Cty. 
These fishes have an elongated body without a corselet; and large, com- 
pressed, sharp teeth. ‘Their palatines have only short and even teeth. 
1. Cybium maculatum, Cuv. 
Cylindrical, elongated. The top of the head and the upper part of the sides of the body 
are of a dark leaden color; the sides are lighter; the jaws, opercula, and abdomen are of 
