SYNOPSIS. 349 



Sp. 4. S. gigas. Dusky Serranus. Lower jaw covered with 

 small scales ; tail rounded. Fin-rays, D. 11 + 16: P. 17: 

 V. 1+5 : A. 3 + 8 : C. 15. Upper parts reddish-brown, 

 gill-covers with two slightly marked lines running obliquely 

 downwards, one on each plate. Cwv. & Vol., t. ii. p. 270, 

 pi. 33. P. gigas, Gmel., Linn. Perca robusta, Couch, in 

 Loud. Mag. of Nat. Hist., v. p. 21, fig. 7. Dusky Serra- 

 nus, Yarr. Brit. Fish., i. 14. 



GEN. IV. ACERINA. A single elongated dorsal, a portion of 

 the hinder part without spinous rays ; head without scales ; 

 teeth uniform ; operculum ending in a single point, 



Sp. 5. A. vulgaris. The Ruffe, or Pope. Head without 

 scales, and pitted with numerous excavations ; spines of 

 the anterior portion of the dorsal fin very high, rising above 

 the connecting membrane ; caudal deeply forked. Number 

 of rays, D. 14+12 : P. 13 : V. 1 + 5 : A. 2 + 5 : C. 17. 

 Back and sides light olive, passing into silvery white on 

 the belly ; pectoral, ventral, and anal fins, pale brown. 

 Guv. & Vol., iii. p. 4. pi. 41 ; Tarr. Brit. Fish., i. p. 17. 

 P. cernua, Linn., Don. Brit. Fish., ii. pi. 39. Cernua flu- 

 viatilis, Flem. Brit. An., p. 212. 



GEN. V. POLYPRION. A single elongated dorsal fin, the hin- 

 der portion of it at the base, as well as the base of the other 

 fins, covered with small scales ; spines on the anterior part of 

 the dorsal and ventral serrated ; all the scales serrated on the 

 free margin ; a short semicircular row of spines over the eye, 



r the operculum, and over the origin of the pectoral fin. 

 Sp. 6. P. cernium. Upper parts of the body dark purplish 

 brown, under parts white slightly glossed with silvery, 

 outer margin of the tail nearly white. Number of fin-rays, 

 D. 11 + 12 : P. 16 : V. 15 : A. 3 + 9 : C. 17. Cm. & 

 VaL, iii. p. 21, pi. 42. Amphiprion Americanus, Schnei- 

 der, Syst. Ich., p. 205. Serranus Couchii, Yarr. Brit. 

 Pish., i. p. 12 (1st. ed.). 



GEN. VI. TRACHINUS. Head and body compressed, the 

 after elongated ; two spinous dorsals, the first very short, the 

 nd very long ; ventrals jugular, or placed before the pecto- 



