Note: Busycon pyrum (Dillwyn, 1817) is a junior
synonym of Busycotypus spiratus (Lamarck, 1816).
Busycotypus spiratus (Lamarck, 1816) Sinistral Page One
Busycotypus spiratus (Lamarck, 1816) Sinistral Page Two
Busycotypus spiratus (Lamarck, 1816) Sinistral Page Three