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64. S' namaycush, Penn. Lake Trout. Abundant in Lake Michigan. 
Genus Argyrosomus , Ag. 
65. A. clupeiformis , ( Mitch .) Ag. Lake Herring. Very abundant in 
Lake Michigan. The sisco (A. sisco, Jord.) undoubtedly occurs in the deep 
sandy lakes in the northeastern part of the state. 
66. A. nigripinnis , Gill. Black-fin. Common in deep water in Lake 
Michigan. 
67. A. hoy i, Gill. Lake Michigan Sisco. Found in deepwater in 
Lake Michigan. 
Genus Coregonus , Linn. 
68 O. albus, LeS. White-fish. Very abundant in Lake Michigan. 
FAMILY HYODONTIDAE. 
Genus Hyodon , LeS. 
69. H. tergisus , LeS. Moon-eye. Common in Lake Michigan and in 
all the large streams throughout the state. 
FAMILY CLUPEIDAE. 
Genus Alosa , Guv. 
70. A. sapidissima, ( Wils.) Stor. Common Shad. Has been intro- 
duced into one or two streams in the northern part of the state ; but whether 
it thrives or not, has not been proven. 
Genus Pomolobus , Raf. 
71. P' clirysochrous , Raf. Ohio Shad Found in the Ohio and Mississippi 
rivers, and sometimes ascends the Illinois. It is also accredited to Lake 
Michigan by Mr. J. N. Milner. 
Genus Dorosoma , Raf. 
72. D. notatum , Raf. Gizzard Shad. Very common in the rivers in 
the southern and central parts of the state, and, since the opening of the 
canal connecting the Chicago river with the Illinois, has found its way, with 
the preceding, into Lake Michigan. 
For some time previous to this date, ^December 2nd ', the young, from 
three to four inches long, have been frequenting, in considerable numbers, a 
“slip” extending from the Chicago river to one of the City Water Works 
buildings. The attraction to the fishes appears to be the hot water which 
runs into the “slip” from the Water Works engines. As the fishes swim 
about in this warm water, they strike the hot stream as it flows in, and many 
are killed. The opening of the above mentioned canal will have considera- 
ble influence upon the distribution of the lake and river fishes, and numer- 
ous species will in all probability take advantage of the communication be- 
tween the Mississippi and the great lakes. 
This undoubtedly accounts for the occurrence of Chaenobryttus gulosus 
in Lake Michigan, as well as of the two preceding species. 
FAMILY CYPRINIDAE. 
Genus Campostoma , Ag. 
73. C. anomalum , (Raf.) Ag. Stone Roller. Occurs in the greatest 
abundance throughout the state, although perhaps more rarely in the vicinity 
