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3 
gecond dorsal, thence gradually decreasing: heud, 
when the mouth is contracted, a little sloping, pre- 
senting a cylindric, obtuse snout: eyes moderate and 
round under the skin; éris yellowish-white, with a 
dark brown circle; pupil black: mostrils projecting 
in a small tube: teeth compound and simple; those 
in the throat five, pretty strong, inferior ones cordate 
denticulate, lateral ones curved, denticulate,the two 
superior teeth simple; these teeth are surrounded by 
‘teeth of other forms; inferior tooth semicircular, 
with seven sharp points, the superior one has two 
points; on earh ide are four twa-painted teeth, pla- 
ced obliquely and succeeded_ by five or six simple 
ones which describe curved lines; and diminish in 
size towards the rim of the mouth; above the upper | 
double tooth and two lateral teeth, is a large sim- 
ple one; behind the lower tôoth are nine perpendi- 
cular ranges of teeth, regularly disposed: sides va- 
ried, red, brown, yellow and blue: back black on 
{he kéel and base of the dorsal fins—this colour is 
the‘basis or origin of the lateralmarbling which is 
composed of small, oblong, irregular and transverse 
spots, grouped together: cuudal fin long above, short 
below, terminated by three angles, that ofthe mid- 
dle indicates the extremityof the tail—lower part of 
the caudal fin short, perpendicular and composed of 
small rays, four or five lines lông, and placed at the 
extremity of the expansion of skin, which connects 
it with the tail. Length thirty inches. 
In several Jakes and rivers of North America is 4 
