American Fisheries Society. 55 
DISCUSSION. 
Prof. Reighard (during the reading of his paper): In ex- 
amining scales to distinguish whitefish from menominee, it is 
necessary to neglect the atypical varieties. ‘There are three char- 
acteristics that will enable one to distinguish menominee from 
whitefish: First, the position of the center; second, the char- 
acter of the striations on the caudal area; third, the character 
of the crenations of the border. In some species the growth 
center is in the center of the scale, and in some it is nearer the 
caudal border, in others nearer the cranial border. Finally in 
some species the striations on the caudal area are almost con- 
fined to that part of the area which is near the center. That is, 
we find in some species that these striations extend from the 
growth center to the edge of the caudal area while in other 
species they are not equally numerous over the whole of that 
area. These characters serve to distinguish the whitefish from 
the menominees. The most striking difference between them is 
that in the whitefish these striations on the caudal area are close 
together and cover the whole caudal area; that you can see in the 
photograph—the caudal area is the lighter one of the two. In 
the menominee these striations are very numerous in the center 
and hardly exist near the border. The growth center in the 
whitefish is nearer the caudal border. The crenations at the 
edge are practically absent in the whitefish, and the flutings 
running from the crenations toward the center are also practical- 
ly absent. 
President: Does a difference in the age of the fish make any 
difference in the character of the scale ? 
Prof. Reighard: I do not think it does. I do not know from 
the examination of the scales, but from the fact that the scales 
grow outward from a center you would expect it to be alike 
all the way out. 
Question. Are there any menominees caught in Lake Erie? 
Answer. No—nor blackfins—the only fish of the sub-family 
there are whitefish and herring. 
Mr. Meehan: Whitefish, herring and the jumbo herring. 
