434 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 



very numerous in all warm seas, most of them valued for food. As here 

 understood, this genus includes a considerable variety of forms, differing 

 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. 

 (////, head. "A cause de 1'espece de prominence que presente leur tete, 

 de la force de cette parti j, de 1'eclat dont elle brille, et d'ailleurs pour 

 annoneer la sorte de puissance et de domination que plnsieurs ossetix 

 de cc -fine exerceut sur uu grand nombre des poissons que frequentent 

 les rivages" Lacepede). 



Our species may be divided as follows : 



a. Teeth present, small, nearly uniform, or the outer somewhat enlarged; no canines. 



(.S,.lnr I'.l.-cker.) 

 ft. Body fusiform, elongate ...................................... crumcnophthalmus. 



bb. Body ovate or subfusiform. 

 o. Depth one-third or less than one-third the length to base caudal. 



pisquvtus; caballus; cibi. 

 cc. Depth more than one-third the length ........................ beani ; falcatus. 



art. Teeth unequal ; lower jaw with small canines. (Carangitu) ........ fallax; 



a. TCI 'th present, small, nearly uniform; the outer row sometimes enlarged; no canines. 



(Selar* Bleeker.) 

 b. Body fusiform, elongate. ( Trachurops Gill. ) 



681. C. criuneiioplfttlialmus (Bloch) Lac. Goggler; Big-eyed Scad. 



Bluish olive above, silvery below, a faint opcrcular spot. Body ob- 

 long-elongate, little compressed, the back not elevated. Head elongate, 

 nither 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 neai 

 isthmus with a fleshy projection, in front of which is a dee]) cross-fur- 

 row; adipose eyelid largely developed. Scales comparatively large. 

 rh.'cks and breast scaly. Gill-rakers long, numerous. Lateral line 

 scarcely arched, its scutes weak, but little carinated. Dorsal spines 

 slender: free anal spines strong; pectorals falcate, nearly as long as 

 head. An ;.iigle at 1<>\\ er posterior part of opereular region as in Clnpca. 

 Head :U; depth. \i. D. VIII-I, 20 j A. JI-I, L'L'; scutes 35. Cape Cod 

 to Madagascar; abundant in tropical seas. 



orumenophthdlnuu IMm-li. t:il". :M:l; (iimthcr, ii, lv!9: Tniflnirops cntmcnoph- 

 , I'M).-. Ai-:i.l.N:it. Bd. I'liila. l.-.'.'J, 4:U.) 



bb. Body ovate or snbfiisifonn. 



c. Depth onc-tliird in- li-ss tlir length tn liase, of caudal. 



Bleeker, Natuurk. Tydschr. 1855, v, 417. 



