INVESTIGATIONS IN MINNESOTA AND NORTH DAKOTA. 357 



sides, belly, and jaws dashed with carmine red, through which a silvery 

 pigment shows. This is one of the most abundant species found in the 

 boxes of the fish-ladder, and collected about the opening or foot of it. The 

 one specimen taken at Ortonville differs somewhat from the other specimens. 

 The head was more sharply pointed; back not elevated; belly decurved; 

 lateral line parallel with belly; vertebral stripe narrow but distinct; lat- 

 eral stripe wide and of a deep metallic blue; sides below lateral line washed 

 with red. Scales in lateral lines, 40; scales before dorsal, 14. 



14. Notropis inegalops(Rafinesque). Common Shiner; Silver sides. Minnesota River 



at Ortonville, common; Minnesota River at Montevideo, abundant; Wheat- 

 stone Creek at IMillbank, abundant ; Pomme de Terre River at Appleton, 

 common ; Chippewa River at Montevideo, common. This species is widely 

 distributed and w^asvery abundant at every station visited. 



15. Notropis heterodon (Cope). Pomme de Terre River at Appleton, common; 



Wheatstone Creek at Millbank, 19 specimens. 



16. Notropis scopifer Eigenmann & Eigenmann. Pomme de Terre River at 



Appleton, 1 specimen. 



17. Rhinichthys cataractae dulcis (Girard). iJace. Pomme de Terre River at 



Appleton, 2 specimens. Length, 2| inches. Color, A^ery dark. 



18. Hybopsis kentuckiensis (Rafinesque). Taken at every station in the Minne- 



sota Valley, but the individuals were neither large in size nor abundant in 

 numbers. There are some external differences in the specimens from 

 various stations. Those from the Minnesota River at Ortonville were all 

 young and light in color ; those from the more stagnant waters of Wheat- 

 stone Creek are larger and quite dark; while the sides and bellies of many 

 of the specimens from the Pomme de Terre are marked with large, dark spots. 



19. Seniotilus atromaculatus (Mitchill). Horned Dace; Creek Chub. Minnesota 



River at Ortonville, 4 specimens ; Wheatstone Creek at Millbank, 4 ; Pomme 

 de Terre at Appleton, abundant; Chippewa River at Montevideo, 12 speci- 

 mens. This species, while far from being as abundant here as in the Middle 

 and Southern States, was niore plentiful than the last-named species. 



20. Notemigonus chrysoleucus (Mitchill). Golden Shiiier. Minnesota River at 



Ortonville,! specimen; Wheatstone Creek at Millbank, 5. A rare species, 

 but the specimens are large and in fine color. 



21. Percopsis guttatus (Agassiz). Trout Perch. Minnesota River at Montevideo, 



3 specimens. Specimens from this locality are not so hardy as those taken 

 from the lake. 



22. Fuiidulus diaphanus (Le Sueur). Mud Minnow; Top Minnoiv. Minnesota 



River at Ortonville, 2 specimens ; W^heatstone Creek at Millbank, 5 ; Pomme 

 de Terre River at Appleton, common; Chippewa River at Montevideo, 7; 

 Minnesota River at Montevideo, common. This species prefers the more 

 quiet waters, and was not taken from ripples, or swift currents. 



23. Lucius lucius (Linna?us). Pike; Northern Pickerel. Minnesota River at Orton- 



ville, 10 specimens ; Wheatstone Creek at Millbank, common ; Pomme de Terre 

 at Appleton, 6 ; Chippewa River at Montevideo, 15 ; Minnesota River at Mon- 

 tevideo, 4. While this species prefers the lakes, it is by no means confined to 

 these waters, but is common in streams and very abundant in the Chippewa 

 River and Wheatstone Creek. It ascends the latter stream from Big Stone 

 Lake, since the water connection during high water is almost direct. 



24. Eucalia inconstans (Kirtland). Brook Stickleback. Minnesota River at Orton- 



ville, specimens very small and poorly colored. 



25. Ambloplites rupestris (Rafinesque). Rock bass; Goggle-eye; Red-eye. Minne- 



sota River at Ortonville, 3 specimens; Pomme de Terre River at Appleton, 

 10; Chippewa River at Montevideo, 7; Minnesota River at Montevideo, 2. 

 An excellent food-fish, thriving well in the lakes, but not taken in quantities 

 from the streams. 



