Argilloecia alexanderi Swain, 1948 † (original description)
Bairdia postextensa Swain, 1948 † accepted as Bairdoppilata postextensa (Swain, 1948) † (original description)
Bythocypris wicomicoensis Swain, 1948 † (original description)
Cythereis dorsopleura Swain, 1948 † accepted as  † (original description)
Cythereis goochi Swain, 1948 † (original description)
Cythereis marginoreticulata Swain, 1948 † (original description)
Cythereis paraustinensis Swain, 1948 † accepted as Repandocosta paraustinensis (Swain, 1948) Hazel, 1967 † (original description)
Cythereis parwinniana Swain, 1948 † (original description)
Cythereis pellucinoda Swain, 1948 † accepted as  † (original description)
Cythereis reesidei Swain, 1948 † accepted as  † (original description)
Cythereis reticulodacyi Swain, 1948 † (original description)
Cythereis ventroconvexa Swain, 1948 † (original description)
Cytherelloidea howei Swain, 1948 † (original description)
Cytheridea (Clithrocytheridea) aquia Swain, 1948 † (original description)
Cytheridea (Haplocytheridea) israelskyi (Stephenson, 1944) Swain, 1948 † accepted as Haplocytheridea israelskyi Stephenson, 1944 † (new combination reference)
Cytheridea (Haplocytheridea) parvasulcata Swain, 1948 † accepted as Haplocytheridea parvasulcata (Swain, 1948) Coryell, 1963 † (original description)
Leguminocythereis pustolosa Swain, 1948 † accepted as  † (original description)
Loxoconcha postdecliva Swain, 1948 † (original description)
Trachyleberis reesidei (Swain, 1948) Swain, 1952 † accepted as  † (original description)