356 Storer on the 
of the lower jaw, three feet five inches. Jaws with- 
out teeth. Gill-covers silvery brown. Upper part 
of the sword, dark brown, almost black, having à 
dorsal ridge, within which is a groove. Under por- 
tion of the sword, lighter colored, smooth, with a 
velvety feel. The two anterior feet of the sword 
have a bony, perfectly smooth edge. Widest portion 
of the upper jaw, five and a half inches; jaw grad- 
ually terminates in a point. ` Eyes very moveable 
in their orbits, three and a half inches in diameter; 
distance between the eyes, eight inches. Branchie 
composed of four pairs of large parallel laminze, and 
one smaller one. 
The Dorsal fin commences nearly on a line with 
the posterior edge of the operculum. It is strongly 
faleiform ; twenty-two inches high, eighteen inches 
long. But eighteen rays are obvious; the whole 
dorsal ridge between them and within six inches of 
the base of the tail, destitute of fin rays; and in 
their place, a shallow groove the whole extent, sup- 
porting a slight membranous elevation. Six inches : 
in front of the base of the tail, a small fin four inches 
high, one inch long, composed of three rays, looking. 
like the adipose fin of the “Salmonides,” or the fin- - 
lets of many of the “ Scomberoides.” 
The Pectoral fin, also, is falciform, eighteen inches 
high, six inches long; above, almost black; be- 
neath, color of the abdomen. 
The Anal fin is, like the preceding, falciform ; six- 
teen inches high, ten inches long. "The extremity 
of this fin terminates on a plane with the termina- 
tion of the dorsal, and is formed like that. This 
