Genus Offadesma T. Iredale, 1930
(3-2-3-1-3-7-0-11-0-0-0-0-0) Ref. Vokes, 1980 p 209 [see also as Subgenus under Genus Periploma] angasi H. Crosse & P. Fischer, 1864 (3-2-3-1-3-7-0-11-0-1-0-0-0) Ref. Penniket, 1970 p 106 c
(3-2-3-1-3-7-0-11-0-0-0-0-0) Ref. Vokes, 1980 p 209 [see also as Subgenus under Genus Periploma]
angasi H. Crosse & P. Fischer, 1864 (3-2-3-1-3-7-0-11-0-1-0-0-0) Ref. Penniket, 1970 p 106 c