Northwest Hesperian found in Colewort Creek at Lewis and Clark National Historical Park. Shell is brown with a periostracum covered in small hairs. Shell is heliciform with a low conical spire. The lip of the snail is turned back. Animal brown. Diameter = 1.17cm.
Northwest Hesperian found in Colewort Creek at Lewis and Clark National Historical Park. Shell is brown with a periostracum covered in small hairs. Shell is heliciform with a low conical spire. The lip of the snail is turned back. Animal brown. Diameter = 1.17cm.