Cythere (Cythereis) Jones, 1849 accepted as Cythereis Jones, 1849 (subsequent type designation)
Cythereis Jones, 1849 (subsequent type designation)
Cythereis elongata Sutton & Williams, 1939 † (original description)
Cythereis fragillissima Sutton & Williams, 1939 † (original description)
Cythereis linospinosa Sutton & Williams, 1939 † accepted as Trachyleberis linospinosa (Sutton & Williams, 1939) Puri, 1953 † (original description)
Cythereis quinquespinosa Sutton & Williams, 1939 † accepted as Actinocythereis quinquespinosa (Sutton & Williams, 1939) Puri, 1953 † (original description)
Cythereis sinuata Sutton & Williams, 1939 † (original description)
Cythereis smithvillensis Sutton & Williams, 1939 † (original description)
Cythereis spinosa Sutton & Williams, 1939 † accepted as Actinocythereis wechesensis (Sutton & Williams, 1940) Puri, 1953 † (original description)
Cythereis splendens Sutton & Williams, 1939 † accepted as Trachyleberis splendens (Sutton & Williams, 1939) Puri, 1953 † (original description)
Cytherella fimbricinctus Sutton & Williams, 1939 † (original description)
Cytheridea (Haplocytheridea) habropapillosa Sutton & Williams, 1939 † accepted as Haplocytheridea habropapillosa (Sutton & Wiliams, 1939) Stephenson, 1944 † (original description)
Cytheridea (Haplocytheridea) subovata Sutton & Williams, 1939 † (original description)
Cytheridea (Haplocytheridea) subpyriformis Sutton & Williams, 1939 † accepted as Clithrocytheridea subpyriformis (Sutton & Wiliams, 1939) Stephenson, 1946 † (original description)
Cytheridea (Phractocytheridea) Sutton & Williams, 1939 † (original description)
Cytheridea (Phractocytheridea) compressa Sutton & Williams, 1939 † (original description)
Cytheropteron minutum Sutton & Williams, 1939 † (original description)
Loxoconcha delicata (Sutton & Wiliams, 1939) Stephenson, 1944 † (original description)
Pyricythereis delicata Sutton & Williams, 1939 † accepted as  † (original description)
Pyricythereis foveovalva Sutton & Williams, 1939 † (original description)
Pyricythereis smithvillensis Sutton & Williams, 1939 † (original description)
Pyricythereis subtriangularis Sutton & Williams, 1939 † accepted as Buntonia subtriangularis (Sutton & Wiliams, 1939) Stephenson, 1947 † (original description)
Trachyleberis quinquespinosa (Sutton & Williams, 1939) Blake, 1950 † accepted as Actinocythereis quinquespinosa (Sutton & Williams, 1939) Puri, 1953 † (original description)