110 TELEOSTEI: ACANTHOPTERI. — XX. 



283. S. vomer (L.). Moon-fish. Horse-head. Look-down. 

 Adult with soft rays of D. and A. much produced ; young with 

 dorsal spines and V. variously elongate, these fins short with age. 

 Silvery. Head 3; depth l\. L. 12. Warm seas, frequently N. 

 to Cape Cod. 



138. CHLOROSCOMBRUS Girard. (xAwpo?, green ; o-icopPpos. 



mackerel.) 



284. C. chrysurus (L.). Bumpeu. Casabe. Greenish; 

 sides and below golden ; a dark blotch on back of tail ; head deep ; 

 mouth very oblique; P. very long; chord of arch of lateral line 1^ 

 to If in straight part; no scutes. Head 3f ; depth 2^. D. VIII- 1, 

 26. A. II- 1, 26. L. 9. W, Indies, rare N. (xpvaos, gold; 

 ovpd, tail.) 



139. TRACHINOTUS Lacepede. Pompanos. (rpaxvs, 

 rough; varos, back.) 



o. Dorsal with 19 to 20 soft rays ; anal with 17 to 19. 

 b. Body broadly ovate, its depth at all ages more than half the body; sides 

 without black bars. 



285. T. falcatus (L.). Round Pompano. Palometa. Body 

 deep ; profile from nostril to dorsal everywhere about equally con- 

 vex ; lobes of D. and A. high, reaching in adult beyond middle of 

 fin ; bluish, sides silvery ; lobes of D. black in young ; no axillary 

 spot. Head 3| ; depth If. L. 20. Warm seas, occasional N. to 

 N. Y. (T. ovatus (L.) ; T. rhomboides Bloch.) (Lat., scythe- 

 shaped.) 



eta. Dorsal with 25 soft rays; anal with 22; body oblong, rather robust. 



286. T. carolinus (L.). Common Pompano. Bluish, golden 

 below ; changes greatly with age, the young deeper, with conspic- 

 uous fin-spines, and with teeth in jaws ; D. and A. lobes about 

 reaching middle of fins. Head 4 ; depth 2|. L. 18. Gulf Coast, 

 etc., N. to Cape Cod, common S. ; a famous food fish. 



140. NAUCRATES Rafinesque. {vavKpdrqi, pilot.) 



287. N. ductor (L.). Pilot-fish. Romero. Bluish with 

 about 6 broad dark vertical bars. Head 4 ; depth 4. D. IV- 1, 26. 

 A. II- 1, 16. Pelagic; occasional on our coast. (Eu.) (Lat., 

 guide.) 



141. SERIOLA Cuvier. Amber-fishes. (An Italian name.) 



288. S. zonata (Mitchill). Rudder-fish. Bluish, with 6 

 broad black bars, which fade or disappear with age ; an oblique 

 dark band from eye to spinous dorsal; V. mostly black. Head 

 longer than deep; occiput compressed; tail keeled. Head 3^; 

 depth 31. D. VII -1, 38. A. II- 1, 21. L. 30. Cape Cod to 

 W. L, not rare. (Lat., banded.) 



