Genus Cryptodon T. A. Conrad, 1837 [not W. H. Turton, 1822]

(3-4-4-0-21-3-1-5-0-0-0-0-0)
Ref. Vokes, 1980 p 137
[=Tresus J. E. Gray, 1853]
Ref. Abbott, 1974 p 491
Vaught, 1989 p 130