56-S: Marshall Co., Big Blue River at Marysville Dam, Sec. 20, T. 2S, R. 7E, June 16, 1958. 57-M: Marshall Co., Horseshoe Creek, Sec. 6, T. 2S, R. 7E, July 1, 1958. 58-G: Marshall Co., unnamed creek, Sec. 2, T. 1S, R. 7E, July 1, 1958. 59-G: Marshall Co., Mission Creek, Sec. 3, T. 1S, R. 8E, Nov. 30, 1957. ANNOTATED LIST OF SPECIES Forty-eight species were obtained in this survey and five others have been recorded in literature or are deposited in museums: KSC = Kansas State College Museum; and UMMZ = University of Michigan Museum of Zoology. Specimens, unless designated otherwise, are in the University of Kansas Museum of Natural History (KU). In this list, the scientific name of each species is followed by the common name, citations of previous records, and the stations where the species was obtained. I follow Bailey (1956:328-329) in treating _Lepisosteus osseus_ (Linnaeus), _Catostomus commersonnii_ (Lacepede), _Semotilus atromaculatus_ (Mitchill), _Notropis lutrensis_ (Baird and Girard), _Pimephales promelas_ Rafinesque, _Ictalurus melas_ (Rafinesque), _Ictalurus punctatus_ (Rafinesque), and _Lepomis macrochirus_ Rafinesque, in binomial form only. =Scaphirhynchus platorynchus= (Rafinesque), shovelnose sturgeon: Jennings (1942:364) as _Scaphirhynchus platorhynchus_ (Rafinesque); Bailey and Cross (1954:191). Stations 3-S and 4-S. Shovelnose sturgeon were found only in the lower portion of the Big Blue River. On April 20, 1957, many were seen in fishermen's creels at Stations 3-S and 4-S. One male and two females that I examined on that date were ripe or nearly so; eggs seemed well developed and milt flowed freely from the male. After April, 1957, none was collected or observed until April 26, 1958, when one specimen was obtained while shocking. Forbes and Richardson (1920:27) reported that shovelnose sturgeon spawn in Illinois between April and June, and Eddy and Surber (1947:80) reported spawning in May and early June in Wisconsin and Minnesota. =Lepisosteus platostomus= Rafinesque, shortnose gar: Jennings (1942:364). Stations 3-S and 4-S. I saw shortnose gar at various times in 1956 and 1957 at Rocky Ford Dam on the Big Blue River (Station 4-S). One was seen while shocking at Station 3-S on December 26, 1957. =Lepisosteus osseus= (Linnaeus), longnose gar: Jennings (1942:364) as _Lepisosteus osseus oxyurus_ Rafinesque. Stations 1-S, 2-S, 3-S, 4-S, 6-S, 8-S, 9-G, 15-S, 18-G, 25-S, 41-S, 44-S, 52-S, and 53-S. Longnose gar were abundant in the mainstream of the Big Blue River but usually evaded capture. This species, and the shortnose gar, resided in the larger rivers, with _L. osseus_ being taken in only two creeks near their mouths. In periods of high water, gar moved into the flooded creeks, but returned to the river as stream-levels subsided.