438 FISHES. ACANTHOPTERYGII, 



spots ; dorsal fin purple red ; pectorals rose-coloured, and the cau- 

 dal fin carmine. 3 to 4 feet long. Inhabits Mediterranean sea. 

 Risso, pi. v. fig. 17. 

 According to M. Risso, this is one of the most beautiful fishes of the Mediterranean. 



Gen. 5. TRACHYPTERUS, Gouan. 



Dorsal fin very long, supported by round rays, the anterior ones 

 dentated ; no anal fin ; lateral line armed with spines ; tail 

 strongly serrated below. 



T. tcenia, Schn. (Cepola trachyptera, Gmel.) Body elongated, sil- 

 very. 2 feet long. Inhabits Mediterranean sea Shaw, iv. 191. 



Gen. 6. GYMNOGASTER, Brunnich. Bogmarm, Schn. 

 One long dorsal fin ; pectoral fins small ; destitute of anal and 

 ventral fins ; teeth sharp and pointed. 



G. arcticus, Brun. (B. Islandicus, Schn.) Body elongated, sil- 

 very ; lateral line armed with small spines. 4 feet long. Inha- 

 bits Northern seas. Cuv. Reg. An. ii. 246. 



. Snout pointed. 

 Gen. 7. TRICHIURUS, Lin. 



Body elongated, flattened, ensiform ; jaws pointed, with long 

 and curved teeth; dorsal fin extending along the whole body; 

 no ventral or anal fins; tail terminated by a slender filament. 



T. lepturus, Bloch. Body bright silvery, extremely compressed and 

 elongated ; the lower jaw longer than the upper. 3 feet long. 

 Inhabits South American rivers and lakes Shaw, iv. pi. 12. 



T. Indicus, (A. Indica, Will.) Body pale brown, with shades of 

 deeper colour ; jaws of equal length. Shaw, iv. 92. 



Gen. 8. LEPIDOPUS, Gouan. 



Body elongated and flattened ; dorsal fin long ; jaws pointed^ 

 with sharp teeth ; caudal and anal fins distinct ; two point- 

 ed moveable scales in place of ventral fins. 



L. tetradens, (Ziphotheca, Mont. Vandellius Lusitanicus, Shaw.) 

 Body silvery, without scales, carinated on the back and belly ; 

 pectoral fins pointed ; under jaw longest ; four larger teeth in the 

 upper jaw ; tail lunated. 5 feet long. Inhabits European seas* 

 B. Wern. Mem. i. pi. 2, 3. 



Gen. 9. STYLEPHORUS, Shaw. 



Body very long, compressed ; eyes pedunculated; snout length- 

 ened, directed upwards, retractile towards the head by means 

 of a membrane ; pectoral fins small ; no ventral or anal fins ; 

 tail terminating in a filament longer than the body. 



S. chordatus, Shaw. Body silvery, marbled with brown ; caudal 

 process very long, 2 feet long without the filament. Inhabits 

 Gulf of Mexico. Shaw, iv. pi. 11. 



