That the white bass is indigenous to Kansas is evidenced by records of Graham (1885:77) and Cragin (1885:111); however, since that time, and prior to the introduction of this species into reservoirs in the State, _R. chrysops_ has rarely been recorded in Kansas. I collected young white bass at Station 3-S in both 1957 and 1958, and I collected them also in an oxbow of the Kansas River four miles west of Manhattan, Riley County, Kansas, in the mouth of McDowell's Creek, Riley County, and in Deep Creek, Wabaunsee County, and I saw other specimens from an oxbow of the Kansas River on the Fort Riley Military Reservation, Riley County, Kansas. The apparent increase in abundance of white bass in the Kansas River Basin must be attributable to introductions in reservoirs, with subsequent escape and establishment in the streams. =Micropterus salmoides salmoides= (Lacepede), largemouth bass. Stations 6-S, 11-G, 43-S, and 45-M. Four largemouth bass were taken. This species has been widely stocked in farm-ponds and other impoundments in Kansas. =Lepomis cyanellus= Rafinesque, green sunfish: Breukelman (1940:382); and Canfield and Wiebe (1931:5, 7-8, 10) as "green sunfish." All stations excepting 1-S, 2-S, 4-S, 8-S, 9-G, 15-S, 22-G, 25-S, 30-M, 32-G, 34-M, 38-S, 39-S, 41-S, 42-S, 43-S, 44-S, 45-M, 46-M, 47-M, 50-S, and 52-S. Green sunfish occurred primarily in the muddy streams. The ages and total lengths at the last annulus for 25 specimens are as follows: I, 1.1 (9); II, 2.2 (4); III, 3.1 (7); IV, 5.4 (4); and V, 6.0 (1). Male green sunfish were seen on nests on June 29, July 1, and July 9, 1958. =Lepomis humilis= (Girard), orangespotted sunfish: Meek (1895:137); Evermann and Cox (1896:418); Canfield and Wiebe (1931:6) as "orange spots"; and Breukelman (1940:382). All stations excepting 1-S, 9-G, 13-G, 15-G, 17-G, 21-G, 26-G, 34-M, 36-M, 38-M, 43-M, 44-S, 47-M, 50-S, and 52-S. _Lepomis humilis_ was most common over sand-silt bottoms. Only two age-groups were found; their calculated total lengths were I, 1.7 (15); and II, 2.4 (10). Orangespotted sunfish were seen nesting on the same dates as _Lepomis cyanellus_. =Lepomis macrochirus= Rafinesque, bluegill. Stations 7-G, 13-G, 16-G, 24-G, and 59-G. This species has been widely stocked in Kansas. Only young-of-the-year and sub-adults were taken, and these were rare. =Pomoxis annularis= Rafinesque, white crappie: Canfield and Wiebe (1931:5-8, 10) as "white crappie." Stations 3-S, 6-S, 8-S, 12-G, 42-S, and 53-S. White crappie were rare, except in a borrow-pit at Station 6-S. Ages and calculated total lengths at the last annulus for 50 specimens from 6-S are as follows: I, 3.6 (22); II, 5.0 (14); III, 7.1 (5); IV, 8.3 (7); and V, 10.7 (2). =Pomoxis nigromaculatus= (LeSueur), black crappie. Station 6-S.