_Chaenobryttus gulosus_ (Cuvier)--The warmouth has been taken south of the collection area in Osage County on Salt Creek by Elkin (1954:28). FAUNAL COMPARISONS OF DIFFERENT STREAMS The faunas of Elk River, Big Caney River, and Grouse Creek were generally similar. These streams and most of their tributaries originate in the same hilly area of eastern Cowley County and western Elk and Chautauqua counties; their similarities and differences have been pointed out. The following species were taken in all of these streams: _Lepisosteus osseus_ _Dorosoma cepedianum_ _Ictiobus bubalus_ _Moxostoma erythrurum_ _Minytrema melanops_ _Cyprinus carpio_ _Campostoma anomalum_ _Notropis boops_ _Notropis lutrensis_ _Notropis umbratilis_ _Notropis volucellus_ _Pimephales notatus_ _Pimephales tenellus_ _Fundulus notatus_ _Gambusia affinis_ _Ictalurus melas_ _Ictalurus punctatus_ _Etheostoma spectabile_ _Percina caprodes_ _Micropterus salmoides_ _Pomoxis annularis_ _Lepomis cyanellus_ _Lepomis humilis_ _Lepomis megalotis_ _Lepomis macrochirus_ _Labidesthes sicculus_ No species was found in Elk River to the exclusion of Big Caney and Grouse Creek. Fish taken exclusively in Grouse Creek were _Ictiobus cyprinella_ at station G-2 and _Notropis percobromus_ at station G-1. The following species were taken only in Big Caney River: _Ictiobus niger_, _Notropis rubellus_, _Phenacobius mirabilis_, _Pimephales vigilax_, and _Pomoxis nigromaculatus_. _Notropis buchanani_ and _Pimephales promelas_ were taken in Grouse Creek and Elk River, but not in Big Caney River, although the watershed of Big Caney lies largely between these two streams. Three species, _Notropis camurus_, _Micropterus punctulatus_, and _Aplodinotus grunniens_, were found in Elk River and Big Caney but not in Grouse Creek. _Ictalurus natalis_, _Pylodictis olivaris_, and _Percina phoxocephala_ were taken in Big Caney River and Grouse Creek but not in Elk River. _Percina copelandi_ was taken by Cross on Elk River in 1954 and 1955 (K. U. 3464 and K. U. 3197). Forty species were taken in Big Caney River, 35 in Grouse Creek and 31 in Elk River. Collections were made from only six stations on Elk River as compared with 18 from Big Caney and 17 from Grouse Creek. Twenty-four species were taken in the Walnut River system, only one of which (_Notemigonus crysoleucas_) was taken exclusively there. In the Arkansas River 18 species were found, four of which did not occur elsewhere. These were _Hybopsis aestivalis_, _Notropis blennius_, _N. girardi_, and _Fundulus kansae_. Table 5 lists the number of stations in each of the streams surveyed from which each species was taken. TABLE 5.--SPECIES OF FISHES COLLECTED AND NUMBER OF STATIONS IN EACH STREAM SYSTEM AT WHICH EACH SPECIES WAS FOUND.