West Virginia: McDowell: USNM 33767, Dry Fork, Perryville (county questionable, perhaps Randolph County).
Wisconsin: Chippewa: CNHM 8223, Lake Wissota, mouth of Yellow River, Anson Twp. Polk: UMMZ 72511-12, St. Croix River "near" Never's Dam. County unknown: CNHM 15971, Eau Claire River.
Records in the literature.—Ontario: Carleton: Ottawa (questionable record). Essex: Point Pelee. Haldimand: Dunville. Kent: Lake St. Clair. Norfolk: Long Point. Oxford: Beachville. Wentworth: Hamilton Bay (Logier and Toner, 1955:51).
Quebec: Iberville: Richelieu River at Iberville (Logier and Toner, 1955:51).
Alabama: Lawrence: Courtland (Stejneger, 1944:53).
Illinois: Boone: Belvidere. Bureau: Bureau. Cass: Chandlerville. Clay: Louisville (Cahn, 1937:189). Cook: Lake Michigan (Kennicott in Stejneger, 1944:44); Evanston (Necker, 1939:10); Chicago (Schmidt and Necker, 1935:76). Crawford: Robinson. Douglas: northern part of county (P. W. Smith, 1947:39). Fayette: Vandalia. Fulton: Ellisville (Cahn, loc. cit.). Grundy: Morris (Stille and Edgren, 1948:201). Jackson: Jacob (Cagle, 1942:158). Jersey: Grafton (Cahn, loc. cit.). Kane: Batavia; Dundee Game Farm (Stille and Edgren, loc. cit.). Kankakee: Kankakee River near Altort (Necker, loc. cit.). Lake: Fox Lake. LaSalle: Streator (Cahn, loc. cit.). Lawrence: (Hahn in Stejneger, 1944:44). Lee: symbol on map (Cahn, loc. cit.). McHenry: McHenry (Stille and Edgren, loc. cit.). Macon: Decatur. Macoupin: Carlinville (Cahn, loc. cit.). Ogle: Oregon (Garman in [496] Cahn, loc. cit.). Randolph: Chester, Reily Lake. Rock Island: Barstow, Hillsdale, Rock Island (Cahn, loc. cit.). Saline: Horseshoe Lake (Stein, 1954:312). Stephenson: Freeport (Cahn, loc. cit.). Union: Bluff Lake (Garman in Cahn, loc. cit.). Whiteside: Sterling, symbol on map (Cahn, loc. cit.). Williamson: Marion (Cagle, 1942:158). Winnebago: Rockton; symbol in western part of county (Cahn, loc. cit.). County unknown: Fox River (Yarrow, 1882:29).
Indiana: Brown: 1 mi. below Helmsburg (Myers, 1927:339). Clay: Eel River (Kirsch in Stejneger, 1944:45). Franklin: (Hughes in Stejneger, loc. cit.). Jasper: Jasper-Pulaski Game Preserve (Swanson, 1939:690). Jefferson: Madison (Myers, loc. cit.). Marion: Irvington (Stejneger, op. cit.:55). Marshall: 2 mi. NW Culver (KKA). Monroe: Bloomington (McLain in Stejneger, op. cit.:45). Newton: Lake Village (Stille and Edgren, loc. cit.). Posey: Wabash River at New Harmony (Lesueur, 1827:257). Starke: Grant (Stille and Edgren, loc. cit.). Steuben: Fish Creek "near" Hamilton (Stejneger, op. cit.:53). County unknown (Knox or Starke): USNM 72387, Knox (Stejneger, op. cit.:55); "White Water valley," east-central part of state (Butler, 1894:224). USNM 8359 (= Trionyx spinifer asper) has been erroneously recorded from Madison, Indiana, by Yarrow (1882:29) and Hay (1892:145); see discussion by Cahn (1937:200) and Stejneger, (op. cit.:73, 75).
Kentucky: Edmonson: Green River, Mammoth Cave National Park (Hibbard, 1936:281). Fleming: Fox Creek (Welter and Carr, 1939:130). Jefferson: (Funkhouser, 1925:71). Morgan: (Stejneger, 1944:54). County unknown: Ohio and Pond rivers (Funkhouser, loc. cit.).
Michigan: Berrien: mouth of St. Joseph River at St. Joseph (Lagler, 1943:303). Eaton: Brookfield; Olivet (Clark in Ruthven, Thompson and Thompson, 1912:133). Genesee: (Miles in Ruthven, Thompson and Thompson, loc. cit.). Iosco: (Lagler, 1943:283, symbol on map). Kent: (Lagler, loc. cit.). Montcalm: (Clark in Ruthven, Thompson and Thompson, loc. cit.). Muskegon: Muskegon River "near" Muskegon (Lagler, op. cit.:303). Van Buren: Reynolds Lake, 2.5 mi. E Lawrence (Edgren, 1942:180).
Mississippi: De Soto: Lake Cormorant (Stejneger, 1944:55). Holmes: Thornton (Cook, 1946:185). Humphreys: Belzoni (Stejneger, loc. cit.). Sunflower: Warren: Vicksburg, Eagle Lake (Cook, loc. cit.). Washington: Lake Washington (Smith and List, 1955:125); Greenville (Stejneger, loc. cit.).