The name ringens, which signifies aquot;grinning like a dog, aquot; i.e. aquot; showing its teeth, aquot; was of course suggested by the appearance of the mouth, the denticular processes of which are a safe mark of distinction from the two following species. It livesanbsp;...
|Title||:||The Collector's Manual of British Land and Freshwater Shells|
|Author||:||Lionel Ernest Adams|