Elliptio mcmichaeli Clench & Turner, 1956

1. Choctawhatchee River, Holmes Co., FL - 60 mm [PARATYPE]
2. Choctawhatchee River, Holmes Co., FL - 77 mm [PARATYPE]
3. East Fork Amite River, Amite Co., MS - 97 mm
4. Murder Creek, Conecuh Co., AL - 85 mm
5. Pea River, Geneva Co., AL - 87 mm
6. Pea River, Geneva Co., AL - 82 mm

Type locality: Choctawhatchee River, 8 mi. W of Miller Cross Roads, Holmes Co., Florida.

Range: Escambia, Choctawhatchee, Pea, and Amite River systems.

Remarks: Juvenile specimens have the sharp dorsal ridge and corrugations found in most other members of the Crassidens Group. Individuals become progressively elongate with age. Most specimens are quite thin and eroded.

Inseparable from Elliptio fraterna based on shell characteristics alone. That species ranges east in the Apalachicola and Savannah River systems. The two species are separated by anatomical differences. They may be better regarded as subspecies of one species. Mcmichaeli is locally abundant, fraterna is quite rare.

Elliptio macmichaeli is a misspelling.