38 FISH-CULTURAL ASSOCIATION. 
pan a cn ar ld htt an 
lence. Dall states that it is abundant in both winter and 
summer, spawning in September in the small streams falling 
into the Yukon. 
8. Coregonus tulliébee Rich. Tullibee. 
Great lakes and northward into British America. 
This singular and handsome species is said to grow toa length 
of eighteen inches. Its body is deeper than in any of the other 
white-fishes, and the scales are deep but very narrow, giving the 
fish a unique and unmistakable appearance. Richardson had a 
specimen from Pine Island lake, in north latitude 54 degrees. 
9. Coregonus lauretta. Bean. (?) Morskod c¢#ga (Russian). 
Kuskoquim region, and northward to Point Barrow, Alaska. 
This species is not large, rarely exceeding three pounds in 
weight, but it is a very important source of food wherever it 
occurs. It resembles the lake herring, C. artedi, somewhat, but 
has fewer gill-rakers and a much longer dorsal base. In the 
Yukon it is particularly abundant and is one of the best-flavored 
of the Coregoni, becoming the staple article of food in winter, 
according to Mr. Dall. 
© 
10. Coregonus nigrtipinnzs (Gill) Jor. Blue-fin; Black-fin. 
Lake Michigan, in deep water; deep lakes of Wisconsin, known 
from the vicinity of Madison, Wisconsin, whence it has been 
sent by Fish Commissioner Welch. 
This species is locally abundant, as, for example, in Grand 
Traverse bay. Milner reported as follows concerning it: Core- 
gonus nigripinnis is most abundant in seventy or more fathoms 
and is seldom taken in the fishing season, even in as great a depth 
as fifty fathoms. At Grand Haven, Mich, where a line of steam- 
ers keeps the harbor open throughout the winter, the fishermen 
take the black-fin in quantities within thirty or forty fathoms in 
the month of December. 
The black-fin grows to eighteen inches in length, surpassing 
C. artedi in size and differing from it, also, in having evident 
teeth on premaxillaries and tongue. 
11. Coregonus arted? Le Sueur. Lake herring; Cisco; Michigan 
herring. 
