Cryptomastix is a land snail genus, in the family Polygyridae. These snails cannot be differentiated from related polygyrids on the basis of their shells. Instead, the details of the male anatomy must be examined. They are restricted in distribution to the northwestern United States, and to adjacent areas of British Columbia, Canada.

Species

• Cryptomastix devia (Gould, 1846); Puget oregonian
• Cryptomastix germana (Gould, 1851); pygmy oregonian
• Cryptomastix germana vancouverinsulae (Pilsbry and Cooke, 1922)
• Cryptomastix harfordiana (W. G. Binney; 1886); Salmon oregonian
• Cryptomastix hendersoni (Pilsbry, 1928); Columbia oregonian
• Cryptomastix magnidentata (Pilsbry, 1940); Mission Creek oregonian
• Cryptomastix mullani (Bland and J. G. Cooper, 1861); Coeur d'Alene oregonian
• Cryptomastix mullani blandi (Hemphill, 1892)
• Cryptomastix mullani clappi (Hemphill, 1897)
• Cryptomastix mullani hemphilli (W. G. Binney, 1886)
• Cryptomastix mullani latilabris (Pilsbry, 1940)
• Cryptomastix mullani olneyae (Pilsbry, 1891)
• Cryptomastix mullani tuckeri (Pilsbry and Henderson, 1930)
• Cryptomastix sanburni (W. G. Binney, 1886); Kingston oregonian

References