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Show F I S H. ACANTHOPTERYGII. FAMILY-PERCIDJE. PERCA LJEVIS. Jen. PLATE I. P. nigricanti-fusco uudique pwnctata..; vertice, fronte, 1·ostro usque ad nares, et iJtfra.orbitalium parte posteriori, sqttamatis; squarnis, in capite ciliatis scabris, in co1110re sublcevibus. B. 7; D. 9-1/11; A. 3/9; C. 17; P. 15; V. 1/5. LoNG. nne. 11 ; lin. 5. Fonl\r.-Much more elongated than the common Perclt, with the back less elevated. Depth, beneath the commencement of the first dorsal, not quite equalling one-fifth of the entire length. Thickness, in the region of the pectorals, about two-thirds of the depth. Head not quite one-fourth of the entire length. Profile falling gently from the nape in nearly a straight line at an angle of about 45°: at the nape the dorsal line rises so as to interrupt its continuity with the slope of the profile, but it is nearly horizontal along the base of the dorsal fins. The jaws are nearly equal, but when the mouth is closed, the upper one appears somewhat the longer. A band ofvelutine teeth in each jaw, as well as on the vomer and palatines. Maxillaries when at rest nearly concealed beneath the suborbital bones: these last with their lower margin distinctly denticulated ; their surface presenting several small hollows. Eyes rather above the middle of the cheeks, and about equi-distant from the extremity of the snout and the posterior margin of the preopercle; their diameter is one-sixth of the length of the head; the distance from one to the other equals one diameter and a half. Nostrils double, a little in advance of the eyes; the first orifice oval, the second round. Preopercle rectangular, with the angle rounded; B |