Subgenus (Heterozona) P. P. Carpenter in W. H. Dall, 1879 [W. H. Dall, 1879]

(7-0-5-3-0-5-4-6-9-0-0-0-0)
Ref. Kaas & Van Belle, 1980
Vaught, 1989 p 3

cariosus H. A. Pilsbry [T]

(7-0-5-3-0-5-4-6-9-1-0-0-0)
Ref. Kaas & Van Belle, 1980