and its Tributaries. 
from any other of our fishes, and perhaps these el 
acters warrant Mr. Rafinesque in setting them apart 
as a new genus, characterized by the “ Body ‘ob- 
long, thick, and scaly. Vent posterior, nearer to the 
tail. Head scaleless, fleshy all over, even over the 
gill covers, rounded, convex above and short. Mouth 
terminal, small, toothless, with hard cartilaginous lips. 
Opercule double, three branchial rays. Nostrils sim- 
ple. Dorsal fin opposite the abdominals, with the first 
ray simple and cartilaginous. Abdominal fins with 
eight rays." i 
ConEGoNus. Cuv. 
C. albus. Le Sueur. 'The White-Fish of the Lakes. 
Coregonus albus. Le Sueut. Journal of the Academy of Natural 
i 232. 
Sciences.. Vol. I. 
u « PEZ Fauna Boreali-Americana.. Fishes. | 
p. 195 e 
: fig. 
‘> Kirtland. esit on the Zoology of Ohio. p. 195. 
. Plate XXVIH. | Fig. 3. 
Head triangular, compressed, smooth ; gill covers 
diaphanous ; mazillaries wide, and when the mouth 
is expanding, playing upon their attachment above to 
the vomer; eyes brilliant; pupils black ; irides sil- 
very; upper jaw longer than the lower; tip of the 
nose slightly recurved and obtuse. 
Body compressed laterally ; form varying from 
age, sex, and condition ; slightly gibbous behind the 
head; rectilinear between the dorsal and adipose 
- fins. i 
-. Dorsal and anal fins, quadrangular. 
_ VOL. III. — NO. IV. 61 
