Elliptio downiei (Lea, 1858)

1. Satilla River, Pierce/Brantly Co., GA - 77 mm
2. Satilla River, Charlton Co., GA - 63 mm

Type locality: Buck Lake, a bayou of the Satilla River, Wayne Co., Georgia.

Range: Endemic to the Satilla River system.

Remarks: This a smallish species, usually inflated and polished. Juveniles are rayed. Locally abundant.