75. CARANGID^ NAUCRATES. 443 



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

 Head 4 in total length; depth, 2 j caudal lobes 4. D. VI I, 20; A. 

 II-I, 17. Florida to Africa. (Giinther.} Not evidently different from 

 the preceding. 



(Cuv. &. Vat. viii, 419 ; Guutlicr, ii, 483.) 

 era. Body with vertical dark bands. 



699. T. glancus Cuv. & 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 

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

 seas, north to Virginia and Lower California. 



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



226. NAUCRATES Rafinesque. 



Pilot-fishes. 



(Nauclcrus Cuvier; yotmg.) 



(Rafinesque, Caratteri di Alcuni Nuovi Generi, &c., 1810, 44: type Naucrates conductor 



Raf. = Gastcrosteus ductor L. ) 



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

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

 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, (vauxparys, ruler of the ships, *. e. holding ships 

 fast a name applied by the ancients to Eclieneis and other fishes.) 



700. W. dMCtOl* (Linn.) Raf. Pilot-fish; Romero. 



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

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

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

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

 D. IV I, 26 ; A. II 1, 10. In all warm seas ; occasional on our Atlantic 

 coast. 



(Gasterosteus ductor Linn. Syst. Nat. : Naucrates novcboracensis Cuv. & Val. viii, 325; 

 Giintber, ii, 374.) 



