Carychium occidentale (Pilsbry 1891) Western Thorn
Carychiidae, ,Gastropoda, Mollusca, Animalia
Range: Common in lowlands and foothills of Olympic and Cascade Ranges.
Description: 5 to 5.3 whorls; to 2.4 mm high.
Natural History: Most commonly found either among deciduous leaf litter or on soil.
Etymology: karyx – thorn, occident – of the west