SYNOPSIS. 361 



dark blue ; sides of the head white ; belly greyish white, 

 with silvery spots ; first dorsal, pectorals, and ventrals, 

 black; second dorsal and anal nearly flesh-colour. Fin- 

 rays, D. 14— 1 + 13— viii : P. 31 : V. 1 + 5 : A. 2+12— 

 viu : C. 17 to 19.—CUV. dL- Val, viii. p. 58, pi. 210 ; Tarr. 

 Brit. Fish., i. p. 151. Scomber Thynnus, Linn. 



Sp. 46. T. pelamys. Striped Tunny, or Bonito. Under jaw 

 slightly projecting ; teeth few and small ; pectoral pointed, 

 subtriangular ; finlets eight above, seven below ; tail slight- 

 ly crescent-shaped ; colour steel-blue, sides dusky, belly 

 whitish ; sides of the abdomen with four longitudinal 

 dusky bands. — Cuv. ^ Val., viii. p. 113, pi. 214; Yarr. 

 Brit. Fish., i. p. 157. Scomber pelamys, Linn. 



Gen. XXIV. Auxis. Dorsal fins widely apart, as in Sconv- 

 her; in other respects nearly as Thynnus, 



Sp. 47. A. vulgaris. The Plain Bonito. First dorsal, ven- 

 tral, and pectoral fins originating nearly at the same dis- 

 tance from the head ; thorax with a broad scaly corselet 

 terminating behind in four triangular points ; rest of the 

 body smooth ; upper side of the tail with eight, under side 

 with seven, finlets ; tail narrow and lunate ; back mottled 

 with two shades of indigo-blue, belly silvery wliite. — Cuv. 

 ^ Val., viii. p. 139 ; Yarr. Brit. Fish., i. 160. Scomber 

 Rochei, Risso, Ich., p. 165, sp. 3. 



Gen. 25. Xiphias. Dorsal fin single and elongated, ven- 

 trals wanting ; upper jaw excessively prolonged into a sword- 

 like blade ; sides of the tail strongly carinated, mouth without 

 teeth. 



Sp. 48. X. gladius. Sword-fish. Sword terminating in a 

 point, the edges sharp and denticulated ; under jaw like- 

 wise pointed ; dorsal, in young fish, extending to within 

 a short distance of the caudal, but usually interrupted and 

 torn in adults ; caudal crescent-shaped ; pectoral inserted 

 low down, subfalcate. Fin-rays, D. 3 + 40 : P. 16 : A. 2 + 

 15 : C. rV. Upper parts obscure dusky blue ; under, sil- 

 very white, — very yoimg fish have the body covered with 

 small tubercles. — Lirm,, Ouv. <k Vol., viii. p. 255 ; pi. 255, 



