A06 Storer on the 
liquely down over about eighteen scales, opposite 
the posterior extremity of the pectoral fins, very 
gradually passes up again towards the posterior ex- 
tremity of the body, assuming a straight course, 
which is pursued to the base of the tail. 
'The Dorsal fin is of a light brown color; it com- 
mences about three lines back of the ventral fins, is 
five lines wide at the base, and partially shuts into a 
groove. 
The Pectoral fins commence on a line with the 
posterior angle of the operculum; they are an inch 
long; yellowish, except the upper rays, which are 
nearly black. 
The Ventrals are reddish. 
The Anal fin, which is slightly tinged with red- 
dish, commences on a line opposite the termination 
of the base of the dorsal, and, like that fin, is received 
into a groove. 
The Caudal quite deeply forked; of the same 
color as the dorsal. 
The fin rays are as follows: D.9; P.17; V- 9; 
A. 13; C. 19. 
This fish is taken at all seasons, even through 
the ice in winter. It is seldom found in Boston 
market, but is generally taken for pickerel bait, and 
is considered the best bait for that fish. 
L. argenteus. Nobis. The silvery Leuciscus. 
By the name of “ Dace,” this species, which 
I suppose to be undescribed, is generally known in 
