216 PEECLDJi. 



h. Adiilt: stuffed. W. Indies. 



7. Adult : skin. W. Indies. From Mr. Scrivener's Collection. 



in. IIalf-gro^m : stuffed. W. Indies. From Mr. Scrivener's Collection. 



n. Half-grown : stuffed. Atlantic. 



2. Priacanthus boops. 



Perca boop>:, Forster. 



Antbias bodps, Bl. Sclm. -p. '808. 



Priacantbus boops, Cuv. ^~ Val. iii. p. 103 ; Barker- Webb 8f Berthelot, 



Hist Nat. lies Canaries, Ichthyol. p. 12. pi. 3. f. 2 ; Peters, Wiegm. 



Arch. 1855, p. 238. 

 macropus, Quoi/^Gaim. Voy. deVAstrol. Zool. iii. p. 668. pi. 7. f. 1. 



D. [^. A.^. L. lat. 70. 



The height of the body is equal to the length of the head and 3f 

 in the total ; the diameter of the eye is nearly one-third of the length 

 of the head. The posterior opening of the nostril is a long broad 

 ca\dty, nearly three times as long as broad ; the maxillary bone 

 reacliing a httle beyond the anterior margin of the orbit. Angle of 

 praeoperculum obtuse, with a veiy distinct, serrated, triangular, flat 

 spine ; operculum with two short spines ; sub- and interoperculum 

 minutely serrated. CaudalLs trimcatcd ; all the spines and rays of 

 the dorsal and anal fins with a striated or rough siu-face ; the length 

 of the second dorsal spine is 2| in that of the last. Eose-coloured ; 

 the vertical fins ■with a blackish edge. 



St. Helena ; coast of Mozambique. 



a. Large specimen : stuffed. St. Helena. Presented by General 



Hardwicke. 

 h. Adult : stuffed. St. Helena. Presented by General Hardwicke. 

 c. Adult. Sine patria. 



Valenciennes describes (vol. \di. p. 469) a species procured by 

 Quoy and Gaimard on the voyage of the ' Astrolabe,' naming it 

 Priacanthus macropus, on account of the elongated ventral fins, 

 which are one-thu-d of the total length. This character alone would 

 prove its specific difference from Pr. hoops. But there is another 

 fish, figTu-ed by Quoy and Gaimard, which they state to be the same 

 as the fish of Valenciennes, and having the ventral fins of moderate 

 length. There can be no doubt that the specimens in the British 

 Museum, or the Pcrca hoops of Forster, are identical with that figure ; 

 but I cannot venture to bring the fish of Valenciennes into the 

 synonymy of Pr. hoops. 



3. Priacanthus bonariensis. 



Cuv. 8f Val. iii. p. 105. 



D.L«. A.l L. lat. 80. 



The height of the body is 2|- in the total length, the length of the 

 head 3| ; the diameter of the eye is nearly one-third of the latter. 



