MolluscaBase source details
Webb, G. R. (1942). An abnormal landsnail. The Nautilus. 55(3): 107.
439179
Webb, G. R.
1942
An abnormal landsnail
The Nautilus
55(3): 107
Publication
Date
action
by
Helminthoglypta umbilicata (Pilsbry, 1898) (additional source)