Ancotrema hybridum (Ancey 1888) Oregon lancetooth
Haplotrematidae, ,Gastropoda, Mollusca, Animalia
(Currently no pictures are available)
Identification: Sometimes difficult to distinguish from Haplotrema vancouverense....
Description: Shell with 6 to 6.5 whorls, umbilicus 25 to 28% of shell diameter; color pale greenish-yellow, sometimes darker.
Natural History: Commonly found under woody debris.
A predator of other snails and slugs.
Etymology: Anco trema – elbow hole; hybrida - hybrid
Beaded sculpture absent from last whorl, but present within umbilicus and
usually on spire; sculpture on last whorl is reduced to low wrinkles with spiral
striations microscopic or nearly absent; full-grown shells 15 to 27 mm diameter … Ancotrema
Shell with 6 to 6.5 whorls, umbilicus 25 to 28% of shell diameter; color pale greenish-yellow, sometimes darker; a predator of other snails and slugs; commonly found under woody debris; sometimes difficult to distinguish from Haplotrema vancouverense