foraan ana Ever maun, Fis/ies of North America. 897 



(i. Dorail anil anal without fmlete. 



j. Lateral liuo with well-developed scutes for its entire length; body 



elongate. TKACHURUS, 416. 



jj. Lateral liuo with scutes on its straight posterior portion only (these 



sometimes very few and small, especially in those species with the 



body much compressed). 



k. Shoulder girdle with a deep cross furrow at its junction with the 

 isthmus, above which is a fleshy projection ; body elongate. 



TUACHUUOPS, 417. 

 kk. Shoulder girdle normal, its surface even; body deeper. 



I. Body oblong or more or less elevated, not as below. 



w. Teeth of jaws in few series or in one series, unequal, or 

 at least not forming villiform bands, the outer scries 

 above usually enlarged, the lower teeth usually uni- 

 serial. 



M. Maxillary very narrow, its greatest width scarcely % 

 eye; head small; lateral line strongly arched in 

 front; teeth uniserial, those on palatines and 

 vomer minute or obsolete. HEMICABANX, -11^ 

 MM. Maxillary broad; head rather large; vomer and pala- 

 tines with teeth. CARANX, 419. 

 mm. Teeth of jaws equally small or wanting, forming villi- 

 form bauds if present; maxillary broad; body com- 

 pressed; spinous dorsal weak, usually disappearing 

 with age. 



o. Teeth very minute, disappearing in the adult; no teeth 



on vomer or palatines; dorsal spines low and weak. 



GNATHANODON, 420. 



oo. Teeth persistent, in bands; vomer and palatines with 



minute teeth. 



p. Soft dorsal with none of its rays produced in fila 



ments; lateral line nearly straight; body 



oblong. CARANQOIDES, 421. 



pp. Softdorsal with 1 to 6 rays produced in filaments. 



q. Body moderately compressed; spinous dorsal 



more or less persistent. CITUI.A, 422. 



</</. Body deep, greatly compressed, its edges all 



trenchant, 

 r. Soft dorsal lobe very high, filamentous. 



ALECTIS, 423. 

 rr. Soft dorsal lobe low. 



HYNNIS, 424. 



II. Body broad ovate, very strongly compressed, its outlines 



everywhere trenchant, the anterior profile nearly verti- 

 cal; scutes almost obsolete. VOMER, 425. 

 Jjj. Lateral line without any scutes; body short and elevated, strongly 

 compressed. SELENE, 426. 

 CHLOROSCOMBRIN/E : 



hit. Dorsal outline less strongly curved than ventral; body much compressed, its 

 outlines everywhere trenchant; armature of lateral line obsolete or 

 nearly so. CHLOROSCOMBRUS, 427. 



TllACHINOTIN/E : 



gg. Maxillary without supplemental bone; anal fin similar to soft dorsal, its base much 



longer than abdomen; tail unarmed; pectoral short, not fulntte. 

 . Forehead convex; teeth small or deciduous. TKACIIINOTUS, 428. 



* A detailed account of the American species of CarangitUK is given by Jordan & Gilbert, Proc. 

 U. S. Nat. Mus., 1883, 188-207. 



F. N. A. 58 



