218 FISHES. ACANTHOPT. Trachurus. 



D. 10, 2d D. 13 ; P. 13 ; V. 6 ; A. 11 ; C. 22. The tail is forked. Easily taken 

 by a bait on the surface in a breeze. — A gregarious fish ; and, like the herring, 

 approaches the shores to spawn. 



162. S. Thynnus. Tunny Mackerel. — Eight spurious fin- 

 lets above and below. Second dorsal and anal fins falcate. 



Thunnus, Sibb. Scot. 23. Will. Ich. 176.— S. Th. Linn. Syst. i. 493. 

 Penn. Brit. Zool. iii. 266. Don. Brit. Fishes, t. v.—E, Spanish Mac- 

 kerel ; S, Stoer Mackerel — Rare in England, frequent on the west 

 coast of Scotland. 



Length about 3 to 7 feet. Body round, slender and angular towards the 

 tail; black above, silvery beneath, tinged with purple. 1. D. 14, 2d D. 14 ; 

 P. 34; V. 6; A. 13. Tail lunate. — This species feeds on herrings and pil- 

 chards. 



According to Mr Stewart, the S. Pelamis " has been taken, though rarely, 

 in the Frith of Forth."— Elements, i. p. 363. 



Gen. LXXXIII. TRACHURUS. Scad. — Dorsal and 

 anal fins entire. A row of large imbricated spinous scales 

 on the lateral line. 



163. T. vulgaris. Common Scad. — Body variegated, blue 

 and green ; the belly white. 



Will. Ich. 290— Scomber Trach. Linn. Syst. 494. Penn. Brit. Zool. iii. 

 269 Horse-MackereL— Rare. 



Length 15 inches. Lower jaw longest ; no teeth; eyes large, irides sil- 

 very. The lateral line with a curve ; the broad scales are produced into a 

 spine in the middle of the free edge, the rest of the margin denticulated ; 

 smaller scales between. 1st D. 8, 2d D. 34 ; P. 20 ; V. 6. Tail forked — Wil- 

 loughby, Pennant, and Donovan, mention the occurrence of this fish on the 

 English coast. I found a mutilated example cast ashore in the estuary of 

 the Tay, June 1823. 



Mr Couch adds, in reference to the T. glaums, or Abacore, as a native of 

 the Cornish seas ; " I believe this fish is not uncommon in the summer ; but 

 keeping at a distance from the shore, and seldom taking a bait, is but rarely 

 taken." — Linn. Trans, xiv. 82. 



Gen. LXXXIV. ZEUS. Doree.— Two anal fins. Jaws 

 protrusile ; gape wide. The spinous portions of the dor- 

 sal and anal fins divided from the cartilaginous by a de- 

 pression. Ventrals thoracic. 



164. Z. Faber. — Spinous rays of the first dorsal with long fi- 

 laments. 



Faber, Merr. Pin. 187. Will. Ich. 294 — Zeus Faber, Linn. Syst. i. 454. 

 Penn. Brit. Zool. iii. 221. Don. Brit. Fishes, t. 8 — On the English 

 coast. 



