INDEX. 

 PART III. 



UNIVALVIA TURBINATA, 

 GENUS 7. TROCHUS TOP SHELL. 



* MARINE. SEA. 



Trochus cinerarius (umbilicalis] 



Plate. Fig< 

 74 



Helix vortex 

 ■ ■- ■ crassa 



GENUS 9. HELIX. 

 ** FLUVIATILES, RIVER. 



75 



99 



Cochlea pomatia 



GENUS 10. COCHLEA SNAILS. 

 * TERRESTRES. LAND. 



Cochlea vivipara 



** FLUVIATILES. RIVER. 



8? 



Cochlea laevigata 



MARINE. SEA. 



105 



