212 FISHES. ACANTHOPT. Serranus. 



belly has a lighter tinge of the same colour. When out of season, the whole 

 has a dusky lead colour. It weighs about three pounds." 



Gen. LXIX. DENTEX. — Fore-teeth produced, hooked, 

 with smaller ones behind ; on the sides a row of conical 

 teeth. 



139- D. vulgaris.— Body silvery, fins yellow or red. 



Sparus Dentex, Linn. Syst. i. 471. Don. Brit. Fishes, t. lxxiii — On the 

 coast of Sussex. 



Length upwards of 2 feet. The back and sides have a tinge of red, the 

 belly of yellow, with fuscous clouds. D. V, P. 12, V. 5, A. f, C. 19 — An 

 example of this fish was procured bv Donovan from the Billingsgate market, 

 9th April 1805. 



Gen. LXX. SERRANUS. (Cuvier.)— Head scaly. Mar- 

 gin of the preopercle dentated ; the opercle spinous. 



140. S. No7'vegicus. — Preopercle with five teeth. Scales 



with denticulated margins. 



Perca marina, Sibb. Scot. 24. Linn. Syst. Nat. i. 483 P. Norvegica, 



Fab. Fauna, Gr. IG'7. Perm. Brit. ZooL iii. 258 — Not common. 



Length about a foot. Body oblong, compressed, reddish above ; belly 

 white. Mouth large. Teeth small, numerous. Head depressed. Subor- 

 bital dentated ; spines on the head above the eye ; opercle pointed, with 

 two strong spines. D. ||, P. 18, V. \, A. f, C. 18. The soft rays of the 

 dorsal fin produced. Taii nearly even — The late Dr Skene observed this 

 fish on the Aberdeenshire coast. In Zetland, where I have found it, it is 

 termed Bergylt, or Norway Haddock. 



Gen. LXXI. CERNUA. Ruff. — Head pitted, without scales. 

 Preopercle dentated ; opercle with a spine. 



111. CJluviatilis. Common Ruff. — Back and sides yellow- 

 ish-green, with black spots. 



Merr. Pin. 190. Will. Ich. 334 — Perca cernua, Linn. Syst. i. 487- 

 Penn. Brit. Zool. iii. 259. Don. Brit. Fishes, t. xxxix. — In rivers in 

 England. 



Length about C inches. Scales with denticulated margins. Mouth small, 

 teeth numerous. D. a*, P. 15, V. i, A. §. Tail formed with transverse 

 bands. Gregarious, spawning in March, and frequenting deep water. 



The Black Fish of Mr Jago approaches the ruff in form, but the short 

 description which he has left, and the manufactured figure which Borlase 

 has published, render it impossible to identify the species at present. Bar. 

 Corn. p. 271. tab. xxvi. f. 8. 



Gen. LXXII. PERCA. Perch. — Snout short, without 

 scales. Preopercle dentated, opercle spinous. Teeth nu- 

 merous. Scales denticulated. 



