Pristiloma wascoense () Shiny Tightcoil
Vitrinidae, Stylommatophora, Gastropoda, Mollusca, Animalia
(no pictures are currently available)
Range: The record for Pristiloma wascoense, tentatively identified from the Olympic Mountains near Port Angeles by Branson (1997), needs confirmation; previously reported from Oregon in Wasco County and near Salem, Marion County.
Description: about 2 mm in diameter, has a narrow umbilicus
Conservation Status: Natural Heritage Rank is G2, or "Imperiled throughout its range".