434 CONTRIBUTIONS TO NORTH AMERICAN ICHTIIVOLOGY IV. 
very luiinerous in all warm seas, most of them valued for food. As here 
iiiiderstood, this genus includes a considerable variety of forms, dificring 
in the dentition and in the shape of the body. Its members seem, how- 
ever, to form an almost unbroken series from one extreme to another. 
[xdpa, head. “A cause de l’esi>ece de prominence que presente lenr tete, 
de la force de cette partie, de Feclat dont elle brille, et d’ailleurs pour 
annoncer la sorte do puissance et de domination qne plusieurs osseux 
de ce genre exercent siir iiu grand nombre des poissons que frequentent 
les rivages” LacepMe). 
Our species may be divided as follows : 
a. Teeth present, small, nearly uniform, or the outer somewhat enlarged; no canines. 
iSelar Bleeker.) 
h. Body fusiform, elongate crumenophthalmus. 
■ bb. Body ovate or subfusiform. 
0 . Depth one-third or less than one-third the length to base caudal. 
pisqueius; caballus; dbi. 
cc. Depth more than one-third the length beani; faJeatus. 
«rt. Teeth unequal; lower jaw with small canines. (Carangus) .fuUaJc; kippus. 
a. Teeth present, small, nearly uniform ; the outer row sometimes enlarged ; no canines. 
(Stlar* Bleeker.) 
b. Body fusiform, elongate. (Trachurops Gill.) 
6§4. C. crunneaioplatlaalmus (Bloch) luac.—Goggler ; Big-eyed Scad. 
Bluish olive above, silvery below, a faint opercular spot. Body ob- 
long-elongate, little compressed, the back not elevated. Head elongate, 
rather pointed, the lower jaw projecting; maxillary reaching past the 
front of the eye, which is very large, longer than snout, about 3 in head. 
Eye much deeper than the cheeks and greater than the interorbital 
width. A single series of small teeth in each jaw ; very weak teeth on 
vomer and palatines ; a patch of teeth on tongue. Shoulder-girdle near 
isthmus with a fleshy projection, in front of which is a deep cross-fur- 
row; adipose eyelid largely developed. Scales comparatively large. 
Cheeks and breast scaly. Gill-rakers long, numerous. Lateral line 
scarce!}" arched, its scutes weak, but little carinated. Dorsal spines 
slender; free anal spines strong; pectorals falcate, nearly as long as 
head. An angle at lower posterior part of opercular region as in Clupca. 
Head 3J; depth 3^. D. VIII-I, 26; A. II-I, 22; scutes 35. Cape Cod 
to Madagascar; abundant in tropical seas. 
(Scomber crumenophthalmus Bloch, taf. 34‘.1; Gunther, ii, 4‘29: Trachurops crumenoph- 
thalmus Gill, Proc. Acad. Nat. Sci. Phila. 1862, 431.) 
bb. Body ovate or subfusiform. 
c. Dei»th ouo-third or less the leugth to base of caudal. 
* Bleeker, Natuurk. Tydschr. 1855, v, 417. 
