132 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
GENERAL SUMMARY OF THE RESULTS. 
Tlie flsli fauna of the wliole region traversed is ]>oor in ooinparison witli that of the 
streams of the Ohio Valley. I obtained in all but 05 species, about 20 per cent of 
which were new to scie)ice. They belong to 14 families and 37 genera. In the Win- 
nipeg system, 1 c., in the whole region drained by the tributaries of Lake Winnipeg, 
only 3 of the 10 families characterizing the ISTearctic region were obtained, and the 
Pacific Slope contains only two. 
The following notable additions to the knowledge of the North American fauna 
were made by these explorations: 
1. A. species of F((ntosten.s {P.colinnbianus= P. jordanioi- the Missouri) discovered 
on the Pacitic Slope. 
2. Xoturus found at the base of the Eockies at Craig, Mont. 
3. Four new species of Notropis added to the east-Canadian fauna. 
4. Two new species of A(josia added to the Pacific fauna. 
5. A new species of whitefish {Goregonus coulteri) discovered in the Eocky IMoun- 
tain streams of a restricted region in British Columbia. 
0. The fandly of Pereopsidcc found to have a representative on the Pacific Slope in 
the new genus Columhia. 
7. Several species of Etlieostoma found in Canada, among them two new species. 
8. One new Cottns (C. onychus) added to the fauna of the Saskatchewan. 
9. A new Coitus {C. 2diilonips) discovered in the Kicking Horse at Field. 
10. A species of Lota reported both in the Columbia and the Fraser. A specimen 
since secured from the Columbia. 
11. It was discovered that the fins of the fishes of the Pacific Slope vary from the 
fins of fishes of the Atlantic Slope in definite directions. 
12. The extent of variation between the species of any given family of fishes on 
the Pacific coast was found to be greater than that between the species of the same 
family on the Atlantic Slope. 
13. Eichardsonius was ])roved to be a subgeuus of Leuciscus. Its species were 
found to vary directly with the locality. Each locality examined has a variety which 
in the aggregate difters from the variety of every other locality. 
Note. — Since this paper has been jiut in type Drs. Jordan and Everniann have jjlaced the proofs 
of the Fishes of North America in my liands, and I have adopted all the changes in nomenclature 
suggested hy them up to Cyprinida'. Dr. Jordan has also made many suggestions regarding the 
chaiiter on “Structural Peculiarities,” etc., p. 122. I have not been able to give these suggestions 
the attention they merit, but they will receive due consideration in a more detailed study of this 
subject. 
