variety. It isa land? fhell, of a thin ftru&ure, and 
_ the inhabiting animal bears the moft ftriking refem- 
blance to the common fnail. It may be added that 
it feems fcarce allowable to rank this fhell under the 
Linnzan genus Bulla, with the general form and 
characters of which it does not perfectly agree. 
