PLATE CII. 



TURBO FONTINALIS. 



GENERIC CHARACTER. 



Animal Limax. Univalve, spiral, or of a taper form. Aperture 

 sgmewhat compressed, orbicular, entire. 



SPECIFIC CHARACTER. 



Shell umbilicated, subconic, wreaths ventricose, smooth. 



Turbo Fontinalis : testa umbilicata subconica anfractibus ven- 

 tricosis laevibus. 



Not described by Pennant or Da Costa. Lives in clear fresh 

 waters. 



