INDEX. 



The first numbers indicate the page, the second the 

 plate, and the third the figure. 



ACHATINA, 93. 



acicula, 93, viii, 8. 

 ACME, 97. 



lineata, 97, viii, 11. 

 ANCYLUS, 41. 



fluviatilis, 41, iv, 9. 



lacustris, 41, iv, 10. 

 ANODONTA, 21. 



*&natina, 21, ii, 2. 



cygnea, 21, ii, 1. 

 AQUATIC, 13. 

 ARION, 42. 



ater, 43. 



flavus, 43. 



hortensis, 44. 

 BALIA, 87. 



perversa, 87, viii, 5. 

 BIVALVES, 13. 

 BULIMUS, 75. 



acutus, 75, vii, 7. 



