iCs, TESTACEA. 



348. PLANORBIS contortus. 



Planorbis tefta fufca , flipra plaiia, fubtus um- 

 bilicata , apertura arcuata. 



Planorbis minima craffa. Petiv. gazopk. t. 92. £, 8« 



Planorbis tefta fufca, fupra plana, fubtus concava, perfo- 

 rata, anfraflibus fex teretibus. Geofroi tcfl. 3. 



Helix tefta fubumbilicata, plana, utrinque aequali, aper- 

 tura lineari arcuata. Lin. Stjft. 673. 



Berl. Ma^a%. 4. B. p. 260. t, ^. £. 21. p. 261. 

 No. CXVI. 



Dan. TOBAKSRULLE- SKIVEN. 



Germ. die kleine teller - schnecke dder post- 



HORNCHEN. 



Gali, le petit planorbe a six spirales romdes. 



diam. i - 2 lin, axis | lin. 



7^/?fl opaca, fulca, brunnea, interdum fuJva, centro pel- 

 liTcida, in aqua to:a deaurata, fupra plana punfto centri cavo, fub- 

 tus umbilicata ; Anfra£tus arfliiflTme fibi invicem perpendicularirer 

 adpreffl, pro aetate tres, quatuor, quinque , fex, feptem ; hinc 

 H. coiitorta Lin. & Pianorbis 3. Geo/r. fola setate diverfa. Subtus 

 umbilicus excavatus , quatuor & in paucis fex anfraftus numerandi, 

 jipertiira luna; inftar , in primo quadrante , arcuata, 



Limax grifeus j teraacula vix \ lineee long^, grifea nur- 

 albo. 



gine 



In foffis aquofis , in Lemna & Marchantia, 



349. PLA- 



