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IMPERILED PACIFIC NORTHWEST MOLLUSK SPECIES

Puget Oregonian (Cryptomastix devia)
Columbia Oregonian (Cryptomastix hendersoni)
Evening fieldslug (Deroceras hesperium)
Tall pebblesnail (Fluminicola n. sp 2)
Diminuitive pebblesnail (Fluminicola n. sp 3)
Nerite pebblesnail (Fluminicola n. sp 11)
Potem pebblesnail (Fluminicola n. sp. 14)
Flat-top pebblesnail (Fluminicola n. sp. 15)
Shasta Springs pebblesnail (Fluminicola n. sp. 16)
Disjunct pebblesnail (Fluminicola n. sp. 17)
Globular pebblesnail (Fluminicola n. sp. 18)
Umbilicate pebblesnail (Fluminicola n. sp. 19)
Lost Creek pebblesnail (Fluminicola n. sp. 20)
Nugget pebblesnail (Fluminicola seminalis)
Burrington jumping slug (Hemphillia burringtoni)
Basalt juga (Juga O n. sp 2)
Cinnamon juga (Juga O n. sp 3)
Columbia duskysnail (Lyogyrus n. sp 1)
Masked duskysnail (Lyogyrus n. sp 2)
Canary duskysnail (Lyogyrus n. sp. 3 Colligyrus convexus)
Siskiyou sideband (Monadenia chaceana)
Dalles sideband (Monadenia fidelis minor)
Shasta sideband (Monadenia troglodytes troglodytes)
Wintu sideband (Monadenia troglodytes wintu)
Chelan mountainsnail (Oreohelix n. sp)
Crater Lake tightcoil (Pristiloma arcticum crateris)
Shasta chaparral (Trilobopsis roperi)
Tehamana chaparral (Trilobopsis tehamana)
Hoko vertigo (Vertigo n. sp 1)
Big Bar hesperian (Verspericola pressleyi)
Shasta hesperian (Vespericola Shasta)
Knobby rams-horn (Vorticifex n. sp. 1)

Chelan mountainsnail photo © William Leonard