75. CARANGID^ NAUCRATES. 443 



sal and anal extending beyond the middle of the fins when depressed. 

 Head ^ iu total length; depth, 2|; caudal lobes 4. D. VI— I, 20; A. 

 11-1,17. Florida to Africa. {Gilntlier.) Not evidently different from 

 the preceding. 



(Cnv. &. Val. viii, 419 ; Guntlior, ii, 483.) 



aa. Body with vertical daik bands. 



699. T. ^lasaecis Cuv. «fc Val. 



Bluish, sides golden, with four narrow blackish vertical bands, the 

 first under the first dorsal spine, the second under the fifth, the others 

 under the soft dorsal. Dorsal and anal fins falcate, much elevated ante- 

 riorly, reaching beyond base of caudal ; caudal lobes elongate. Head 

 3f ; depth 2. D. VI-1, 19; A. II-I, 18. Pyloric coeca 13. Tropical 

 seas, north to Virginia and Lower California. 



(Cuv. & Val. viii, 400;. Giiiitlier, ii, 483; Holbrook, Ichth. S. C. 192.) 



226.— NAUC RATES Rafinesque. 

 Pilot-fishes. 



{Nauclerus CnyiGV ', youug.) 



(Rafinesque, Cavattori di Alcnui Nuovi Geueri, »fec., IHIO, 44: typo Naucrates conductor 

 Raf. = Gasfcrosicas dtictor L. ) 



This genus differs from Seriola only in the reduction of the spinous 

 dorsal to a few (4 or 5) low, unconnected spines. The young {Xauderus 

 Cuv.) have the spines of the dorsals connected by membrane, and a more 

 or less distinct strong spine at the angle of the operculum. A single 

 species, in the open seas, (vauz/jrirr^?, ruler of the ships, i. e. holding shiijs 

 fast — a name ai)plied by the ancients to Echeneis and other fishes.) 



700. N. Auctor {hinu.) lla{.— Pilot-fish ; Romero. 



Bluish, with five to seven dark vertical bars. Bod^^ rather elongate, 



little compressed. Snout rather blunt. Mouth terminal, oblique, small ; 



maxillary scarcely reaching orbit. Caudal keel large, fieshy; pectorals 



short and broad; ventrals rather large. Head 4 in length; depth 4. 



D. IV — I, 20; A. II — I, IG. In all warm seas ; occasional on our Atlantic 



coast. 



{Gaateroaieiis ductor Linn. Syst. Nat. : Naucratca noveboracenaia Cuv. & Val. viii, 325; 

 Giiuther, ii, 374.) 



