One rosyface shiner (KU 4195) was taken. This species was previously reported from only two localities in the Kansas River Basin: in the Mill Creek Watershed, Wabaunsee County, and Blacksmith Creek, Shawnee County as _Notropis rubrifrons_ (Cope) (Gilbert, 1886:208). Mill Creek and Blacksmith Creek are northward-flowing tributaries of the Kansas River that arise in the Flint Hills. Graham (1885:73) also recorded _N. rubellus_ (as _N. rubrifrons_) from the "Kansas and Missouri Rivers"; however, I suspect that his specimens were _Notropis percobromus_, a species not generally recognized in Graham's time (see Hubbs, 1945:16-17). _Notropis rubellus_ is now abundant in the Mill Creek Watershed (Wabaunsee County), but, except for my specimen No. 4195, has not been taken recently in other streams in the Kansas River Basin. =Notropis umbratilis umbratilis= (Girard), redfin shiner. Station 3-S. One specimen of _N. u. umbratilis_ was captured near a sandbar on March 26, 1958. The absence of this species in Flint Hills streams of the Big Blue River Basin is unexplained; redfin shiners occur commonly in southern tributaries of the Kansas River both upstream and downstream from the mouth of the Big Blue River. In Kansas this species is usually associated with the larger pools of clear, upland streams. Canfield and Wiebe (1931:6-8) may have referred to this species in recording "black-fin minnows" from the Nebraskan portion of the Big Blue River Basin. =Notropis cornutus frontalis= (Agassiz), common shiner. Stations 4-S, 5-G, 7-G, 10-G, 11-G, 12-G, 13-G, 18-G, 22-G, 26-G, 27-G, 28-G, 29-G, 31-G, 32-G, and 59-G. Common shiners were most abundant in middle sections of the clear, gravelly creeks. =Notropis lutrensis= (Baird and Girard), red shiner: Meek (1895:136); and Evermann and Cox (1896:404-405). All stations excepting 1-S, 17-G, 30-M, and 51-M. Red shiners were the most widespread species taken in my survey, occurring in all habitats, and in all kinds of streams. On two occasions I observed what apparently was spawning behavior of this species. Both times the specimens collected were in the height of breeding condition, stripping in the hand easily, and often without pressure. At the first locality (Station 29-G) no attempt was made to obtain eggs, but by disturbing the bottom at the second (55-M) I found eggs that were thought to be those of red shiners. The eggs were slightly adhesive, clinging to the hand and to the bobbinet seine. On June 29, 1958, at Station 29-G, red shiners appeared to be spawning in an open-water area measuring about 15 by 15 feet, over nests of _Lepomis cyanellus_ Rafinesque and _L. humilis_ (Girard). No interspecific activity was noted between the sunfish and the red shiners. Water temperature at this station was 73.4 deg.F., and the bottom was gravel, sand, and mud. Observations were made from a high cut-bank, by naked eye and by use of 7-X binoculars.