INDEX 

 PART III. 



UNIVALVIA TURBINATA. 



GENUS 7. TROCHUS TOP SHELL. 



* MARINE. SEA. 



Trochus clnerarlus (umbilicalis) 



Plate, Fig, 

 74 



Helix vortex 

 — — crassa 



GENUS 9. HELIX. 

 ** FLUVIATILES. RIVER. 



75 



99 



GENUS 10. COCHLEA SNAILS. 



* TERRESTRES. LAND. 

 Cochlea pomatia - - - • 84. 



** FLUVIATILES. RIVER. 

 Cochlea vlvipar3 • • - - », 87 



Cochlea laevigata 



MARINE. SEA. 



105 



