Gasterosteus. FISHES. ACANTHOPT. 219 



Length 17 inches. Body oval, compressed, olive, blue, and white, with a 

 round black spot on the side. 1st D. 10, 2d D. 24 ; P. 14 ; 1st A. 4, 2d A. 22 ; 

 C. 14. Tail round. Spinous scales on the back and belly, at the base of the 

 fins. Lateral line waved.— Willoughby mentions this fish as common in 

 Cornwall. It is occasionally brought to the London market. 



Gen. LXXXV. SPINACHIA.— Lateral line armed with 

 large pointed imbricated scales. Ventrals, of a single ray, 

 supported by a spinous shield. 



165. S. vulgaris. — Back with fifteen spines. 



Aculeatus marinus major, Sibb. Scot. 24. Will. Ich. 340. — Gasterosteus 

 Spin. Linn. Syst. i. 492. Penn. Brit. Zool. hi. 263. Don. Brit. Fishes, 



t. 45 In the sea rare. 



Length 6 inches. Snout produced ; mouth tubular ; teeth small. 2d D. 

 7, P. 10, A. \, C. 12. Tail even at the end. 



Gen. LXXXVI. GASTEROSTEUS. Stickleback.— 

 Ventrals of a single spine ; the bone of the pelvis forming 

 an intervening shield, pointed behind. 



166. G. P. aculeatus. — Three spines on the back ; scales on 



the sides large, transverse. 



Pungitius, Merr. Pin. 189. Si b b. Scot. 25 — Pisciculus aculeatus, Will. 

 Ich. 341. Gast. acul. Linn. Syst i. 489. Penn. Brit. Zool. iii. 261. 

 Don. Brit. Fishes, t. xi — Common in rivulets, ditches, and lakes. 



Length 2 inches. Body square near the tail. 2d D. 11, P. 10, A. §, C. 

 12. A voracious fish. Spawns in April. Sometimes found in estuaries, 

 after floods, where it attains a large size. 



167- G. Pungitius. — Ten spines on the back ; sides smooth. 



Piscis aculeatus minor, Will. Ich. 342.— G. Pung. Linn. Syst. i. 491. 

 Penn. Brit. Zool. iii. 262. Don. Brit. Fishes, t. 32 — In the sea and 

 rivers. 

 Length about an inch and a half; olive above, white below. Dorsal spines 

 irregular in their direction. 2d D. 9, P. 9, A. \. Tail rounded. 



Mr Couch states in reference to the Centronotus diictor, or Pilot-fish, 

 that " Two of this species a few years since accompanied a ship from the Me- 

 diterranean into Falmouth, and were taken in a net." — Linn. Trans, xiv. 82. 



Gen. LXXXV1I. LAMPRIS. Opah.— Snout short ; ven- 

 trals abdominal. 



168. L. Luna. — Fins red; body above greenish blue, with 



silvery spots. 



Piscis maculis aureis aspersus, Sibb. Scot. t. vi. f. 3. Wallace, Ork. 37- 

 — Opah, Penn. Brit. Zool. iii. 223. Sower. Brit. Misc. i. p. 45. t. 22. 

 Don. Brit. Fishes, t. 97 In the British seas rare. 



