UNIVALVES NAUTILUS. 83 



Minute or microscopic Shells. 



Scientific Name. Locality. Common Name. 



Calcar Adriatic Spur Nautilus 



Rotatus Britain, Shores of Rimini Wheel • • • • do 



Lsevigatulus • • • • Sandwich, Kent ........ Smooth do 



Depressulus Reculver, Kent Compressed do 



Crispus Britain, Mediterranean • • Keel-edged do 



Beccarii Britain, S. Seas, Adriatic Beccaria's • do 



Balthicus Baltic Baltic • • • • do 



Crassulus Reculver, Kent Strong do 



Umbilicatulus • • • Kent, Devonshire Umbilicateddo 



Lobatulus Britain, Norway Lobed do 



Rugosus Southern Ocean Rugged • • • do 



Umbilicatus • • • • Croatia Oblique jointed do 



Division II. — Spiral, with detached whorls. 

 Spirula E. & W. Indies, America Ram's horn do 



Minute Shells, 



Spengleri India Spengler s • do 



Unguiculatus Ditto • • Nail-shap'd do 



Division 1X1, Elongated and almost straight. 



Minute. 



Serailituus Kent, Shores of Li burni • Halfcrozier do •• 



Lituus Red Sea Crozier • • • do • • 



Carinatulus Kent Keeled • • • do • • 



Obliquus Britain, Mediterranean • Obliquely striated 



Raphanistrum • • • Mediterranean Twelve striated 



Raphanus Adriatic, Mediterranean- Seventeen striated 



G2 



