ACANTHOPTERYGIANS : SCOMBERIDyE. 



335 



teeth. It contains the Skip-Jack, or Striped Bonito, P. 

 sarda, Cuv., of the Atlantic, which is from twelve to 

 twenty inches long, dark plumbeous above, abdomen 

 silvery white, with six or more parallel, longitudinal, 

 somewhat oblique dark stripes on the body and sides. 



The Genus XipJiias Sword-Fishes has a very long 

 beak, or sword-like upper jaw. The Common Sword- 

 Fig. 203. 



Fig. 204. 



Sword-Fish, X. gladius, Linn. 



Fish, X. gladius, Linn., of the Atlantic and Mediter- 

 ranean, is from ten to sixteen feet long. It attacks the 

 largest animals of the sea, and swims with astonishing 

 swiftness. 



The Genus Naucrates Pilot-Fishes has a fusiform 

 body, free dorsal spines, a 

 crest on the sides of the tail, 

 and two free spines before the 

 anal fin ; species marine. 



The GenUS Tcmnodon has Pilot-Fish, N. novebomcensis, C. & Val. 



the first dorsal in a furrow, teeth on the outer row sep- 

 arate, flat, and lancet-shaped ; inner series crowded, and 

 the teeth dense upon the vomer, palatines, and tongue. 

 The Blue-Fish, T. Fig . 20S . 



saltator, Cuv., of al- 

 most all seas, is about 

 eighteen inches long, 

 bluish above, lighter 

 below. It is prized 

 for food. 



Blue-Fish, T. saltator, Cuv. 



