242 BULLETIN FLORIDA STATE MUSEUM Vol. XVI No. 4 St. Johns River; Lake Jessup, 3 mi. N Oviedo; St. Johns River, 4 mi. E Sanford; Lake Monroe, Sanford; all Seminole Co. Lake Ashby, 8 mi. NE Osteen; St. Johns River, near Enterprise; Lake Beresford; Spring Garden Lake, 1 mi. NE DeLeon Springs; Lake Woodruff; all Volusia Co. St. Johns River, Astor; Blue Creek, above Lake George; both Lake Co. Lake Kerr, 3 mi. SW Kerr City; Marion Co. OKLAWAHA RIVER DRAINAGE. Black Lake, 3 mi. SW Oakland; John Lake, 1 mi. S Oakland; both Orange Co. Lake Apopka, 2.5 mi. S Monteverde; Lake Harris, Tavares; Lake Yale, [town of] Grand Island; Lake Griffin, Leesburg; all Lake Co. Lake Weir, Oklawaha; Halfmoon Lake, 6 mi. N Lynn; Lake Eaton, 5 mi. NE Lynn; Oklawaha River, Eureka Springs; all Marion Co. Redwater Lake, 4 mi. W. Johnson, Putnam Co. JULINGTON CREEK DRAINAGE. Lake on Julington Creek, 2 mi. W Bayard; Duval Co. Genus Lampsilis Rafinesque Lampsilis Rafinesque 1820, Ann. Gen. des Sci. Physiques (Bruxelles) 5: 298. Species listed: Lampsilis cardium Rafinesque, Lampsilis ovata (Say), Lamp- silisfasciolaRafinesque. Type species, Unio ovatus Say. Subsequent designation, Herrmannsen, 1847, Indicis Generum Malacozoorum, 1: 575. Ortmann, 1912, Ann. Carnegie, Mus., 8: 345. Subgenus Lampsilis The species of Lampsilis described in this paper belongs to subgenus Lampsilis. Frierson (1927: 67-86) listed 10 other subgenera, 3 of which are of his own creation. One of them, Villosa, is now used in place of Micromya Agassiz (see under Villosa). To comment on the other subgenera is not in the scope of this paper, but on cursory examination, I disagree substant- ially with Frierson's classification both on a generic and specific level. Subgenus Lampsilis, while clearly of Interior Basin origin, appears to have speciated about equally there and in the Apalachicolan and At- lantic Slope regions. Lampsilis (Lampsilis) teres (Rafinesque) Figure 3A, 12 B, C Unio teres Rafinesque 1920, Ann. Gen. Sci. Physiques (Bruxelles), 5: 321 (La riviere Wabash [Indiana]; syntype in Poulson colln., not in ANSP [lost], figured by Conrad, 1836, Monography Unionidae, no. 6, p. 52, pl. 38, here selected as type figure. Call, 1900, 24th Ann. Rept. Dept. Geol. and Nat. Res. Indiana (1899), p. 452, pl. 18. Unio anodontoides Lea 1831, Trans. Amer. Philos. Soc., 4: 81, pl. 8, fig. 11 (Mis- sissippi, Alabama, and Ohio rivers; type not in USNM or ANSP [lost]). Lea, 1831, Obs. Unio, 1: 91. Uniofloridensis Lea 1852, Trans. Amer. Philos. Soc., 10: 274, pl. 21, fig. 31 (Cha- chdchi River, West Florida, figured holotype ANSP 42081. Clench and Turner (1956: 202) restricted the type locality to the Choctawatchee River, 1 mi. W Caryville, Holmes Co., Florida). Lea, 1852, Obs. Unio, 5: 30..