Size, 
‘124 ly A, UN; GE, Gila 
They grow fometimes the length of nine or ten 
inches: the fernales are longer and flender than the 
males. 
The form. of the body is ‘Square, the fides are 
rounded, and the angles not fharp:: it is neverthelefs 
long and flender. 
The head is {mall and taper; the under jaw much 
longer than the upper: the upper jaw is moveable, 
capable of being protruded, fo that when open the 
gape is very wide. 
_ The irides are filvery. 
The dorfal fin runs almoft the whole length of 
the back, is very narrow, and confifts of fifty-eight 
rays: the pectoral fins {mall, and have twelve: the 
anus is placed much nearer the tail than the head, 
is narrow, and extends almoft to the former. 
The tail is forked, but the lobes rounded ‘at their 
extremities. 
The color of the back is blue, varying with green; 
on each fide the back is a narrow dufky line or two, 
The fides and belly are filvery;. the lateral line 
ftrait. 
