338 PETRIFACTIONS. 109. HelminthoHihus. 



Muricis* The Murex or Whelk. 



1. Spinous. 



a. The Murex triacanthus. 



Walch. Petrefa^. z. I. />. 1 1 8. tab, C. f . fg, 5. 

 Near the fait fprings in Upper Audriay very rare. 



2. Frondofe. 

 In T^emejia% 



3. With an elongated fpirc. 



a. The Murex fufcatus. 



In the Venetian territories, marmoreous. 



b. The Murex granulatus. 



In Italy and Auftria, marmoreous or filled with fandftone. 



Trochilites. The Trochus or Top-fhell. 



1. Conic. 



Near Bath, in Denmark, SnueJen, Ncr^vay, Saxony, Germany, 

 &c. generally in lime or fandftone. 



a. The Trochus zizyphinus, 

 t^tzT P/uilingham in Wirtemhurg, 



2. Convex. 



In Italy, moftly marmoreous, rarely filiceous. 



a. The Trochus perfpedivus. 

 In Franconia, 



3. The Trochus Telefcopium. 



Near Brendola in the Venetian territories, 



7urhinites. The Turbo, 



]. Solid, 



In Piedmont, Weftphalia, and many parts of Germany, generally 

 in marble, quartz or fandftone. 



a. The Turbo littoreus^ 



In Scwitzerla^d and many parts of Germany, fometimes filled 

 with fpar, or c >vercd with arborelcent figures. 



b- The Turbo Cochlus. 



Near Diefenhof in Sivitxerland. 



c. The Turbo rugofus. 



In Belgium and Franconia. 



