1, 2. Ohoopee River, Tattnall Co., GA - 1: 111 mm; 2: 106 mm
3. House Creek, Wilcox/Ben Hill Col., GA - 80 mm
4. Altamaha River, Tattnall/Appling Co., GA - 98 mm
Elliptio dariensis (Lea, 1842)
1, 2. Ohoopee River, Tattnall Co., GA - 1: 111 mm; 2: 106 mm
3. House Creek, Wilcox/Ben Hill Col., GA - 80 mm
4. Altamaha River, Tattnall/Appling Co., GA - 98 mm
Type locality: near Darien, Georgia.
Range: Endemic to the Altamaha River system.
Remarks: Dariensis is sympatric with hopetonensis, but has a sharper posterior slope. For its size, dariensis is fairly thin-shelled.