INDEX. 

 PART II. 



UNIVALVIA INVOLUTA. 



GENUS 5. BULLA. DIPPER. 



* MAKmJE, SEA. 



Plate. Fig. 

 Bulla lignaria, wood - - - - - 27 



PART III. 



UNIVALVIA TURBINATA. 

 TROCHUS TOP SHELL. 



* MARINiE. SEA. 



conulus, conule - . ^ - .8 Zi ^: 



Trochus tuberculatus, knobbed - . - - S z. 



COCHLEiE, OR SNAILS. 



GENUS 8. NERITA, NERIT. 



* FLUVIATILES. RIVER. 

 Neiita Fluvlatilis. River - . . - 16 a, 



MARINE SEA. 

 Nerita Littoralls. Strand - - - - 20 a. 2. 



Nerita Pallidulus, pale .. - . - jg i. 



GENUS 9. HELIX. 



* TERRESTRES. LAND. 

 HELIX. 

 Cochlea fasciata, girdled -» 



