CISCO. 149 
CHAPTEE IX. 
CISCO. 
I RECOED a description of this fish for the purpose of 
calling to it the attention of those who have the requisite 
knowledge to determine what it is, and beg naturalists, 
if it is still undescribed, to leave it its own pretty, ori- 
ginal name. It inhabits Lake Ontario, near its outlet 
into the St. Lawrence, and is taken in the neighborhood 
of Cape Yincent. It is one of the Coregonus group, but 
neither the White-fish, Attihawmeg, Coregonus albus^ nor 
the Otsego Bass, Coregonus Otsego. It may be related 
to the Coregonus clupeiformis, although difi*ering much 
from the meagre description of the latter in the accounts 
copied one from another, of Dr. Mitchill, Lesueur, and 
Dr. De Kay. 
Tlie Cisco is not so compressed nor deep as the white- 
fish ; the teeth are more delicate and velvety, and in the 
gill arches are a few long, distinct, slim teeth or bristles. 
The mouth is smaller than that of the white-fish, and 
when open, perfectly square. The scales are similar to 
those on the latter, but the tail is so delicate as to make 
counting the rays mere guesswork ; the point of the 
tongue is hard, the back colored green, the sides silver 
white, while the first ray of the pectoral, ventral and 
anal fins is darkish. The first dorsal has ten soft rays , 
