ALLIS SHAD. 
121 
gill-covers adorned with branched lines — perhaps mucous ducts. 
The usual hooked serrations along the line of the belly. Dorsal 
fin over the \entrals, with twenty rays; the first two short; 
pectorals eighteen; anal fin narrow, twenty-one rays, the last 
two from one root; ventrals nine rays. Colour of the back blue, 
uppei portion of the head brown; light golden tints on the 
gill-covers and about the upper parts round the eye, tints of 
blue and jnnk reflect on the sides, silvery below; a large 
black spot close behind the upper border of the giU-covers. 
Pharyngeal bones very slightly rough. 
VOL. IV 
K 
