Diplodonta semiaspera Philippi, 1836
N. Carolina to Argentina
Argentina 14mm

Diplodonta notata Dall & Simpson, 1901
Florida, Caribbean
Venezuela 16mm

Diplodonta orbella (Gould, 1851)
Alaska to Baja California, Kamtschatka to Japan
California 22mm

Diplodonta diaphana (Gmelin, 1791)
West Africa
Mauritania 22mm

Diplodonta brocchii (Deshayes, 1850)
Portugal to Mediterranean
S. Spain 19mm

Diplodonta trigona (Scacchi, 1835)
Mediterranean & adjacent waters
Malta 4mm

Felaniella vilardeboana (d'Orbigny, 1846)
SE. America
Argentina 20mm

Ungulina rubra de Roissy, 1804
Portugal to Sénégal, Mediterranean
S. Spain 21-27mm