Genus Alcadia J. E. Gray, 1840
(5-4-1-3-1-1-0-1-0-0-0-0-0) Ref. Abbott, 1989 p 33 [see also under Subfamily: HELICININAE] major J. E. Gray, (1824) [T] (5-4-1-3-1-1-0-1-0-1-0-0-0) Major Alcadia Ref. Abbott, 1989 p 34 c
(5-4-1-3-1-1-0-1-0-0-0-0-0) Ref. Abbott, 1989 p 33 [see also under Subfamily: HELICININAE]
major J. E. Gray, (1824) [T] (5-4-1-3-1-1-0-1-0-1-0-0-0) Major Alcadia Ref. Abbott, 1989 p 34 c