PETRIFACTIONS. 109. Helmintholithus. 339 



d. The Turbo marmontu?. 



Near Thalheim and Boll in Wirtemburg^ 



e. The Turbo farmaticus and argyroftomus. 



Near Pfullingen in Wirtemburg* 



2. Cancelhte, 



a. The Turbo fcalaris. 



Found in S-ixitzerland on mount Hexenburg, rare. 



b. The Turbo llriatulus. 



Near Sche/miiz in Hungary, marmoreous. 



3. With an elongated fpire. 



In EnglanJy France, S--wttzerland, Ttalyt Silejia, Bohemia^ Sax- 

 o>2y, Germany, &c. aggregate and fixed, generally in marble, 

 flint, chalcedon or fandftone, and Lmetimcs filled with fpar. 



a. The Turbo imbricatus. 



In France, Tyrol, and Eohemia, in marble or fwineftone. 



b. The Turbo replicatus. 

 In France, marmoreou5. 



c. The Turbo acutangulus. 

 Near Pakrtno in 5/a7y, in marl. 



d. The Turbo exoletu?v 

 In Piedmont, in marble, 



e. The Turbo Terebra. 

 In Ba<varia, in marble. 



f. The Turbo variegatus. 

 HQxxBlankenburg'wiXhz Harz, inm^xhle^ 



licis. The Helix or fnail-fhell. 



1. Flattened. 



In various parts of Englajid^ Belgium, Switzerland, Hungary, 

 Germany, Sec, detached or fixed, folitary or gregarious or 

 mixed, in marble, flint or fandftone. 



2. Rounded. 



Near l^ercna in the Venetian territories, in Piedmont, Switzerland, 

 and Germany, 



3. Ovate with a point. 



In England, France, Germany, Switzerland, Auftria, Bohemia, 

 Saxony, &c. in marble or fandftone. 



U u 2 



