Keywords: Pommerhelix monacha shell Mt Wilson.jpg en 25 mm long shell of Pommerhelix monacha at Happy Valley track Mount Wilson Blue Mountains National Park Australia Identified by the Australian Museum The shell has probably been chemically eroded by humic acids in the leaf litter own Poyt448 Peter Woodard 2010-08-20 ok Pommerhelix Animals of Blue Mountains National Park cc-zero |