F I S II.
A C A N T H O P T E R Y G II.
F a m il y— P E R C ID iE .
P e R C A LyEVIS. JeU.
P late I.
P . nigricanti-fusco %indique punctata ; vertice, fronte, rostro usque ad nares, et infra-
orhitaliuni parte posteriori, squamatis; squamis, in capite ciliafis scahris, in corpore
suhlccvibus.
B. 7; D. !)—1,11; A. 3/9; C. 17; P . 15; V. 1/5.
L o n g . im c . 11 ; lin . 5.
Form .— Much more elongated than the common P erch, with the back less elevated. D epth,
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. H ead 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
witli the slope of the profile, but it is nearly horizontal along the base of the dorsal fins. The
jaw s are nearly equal, but when the m outh is closed, the upper one appears somewhat the
longer. A band of velutine teeth in each jaw , as well as on the vomer and palatines. Maxil-
laries 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 o f 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 h e a d ; the distance
from one to the other equals one diameter and a half. Nostrils double, a little in advance of
tlie eyes; the first orifice oval, the second round. Preopercle rectangular, with the angle rounded ;