ERRATA : 



Page 23, line 2 ; for Americana, read : Aucuparia. 



" 175, " 13; " Bu/imus, " Bulinus. 



" 175, " 32; " 45i, " 351. 



" i75, " 32; " 1884, " 1885. 



" 176, " 4: " 95. " 65. 



- 215, " 19; - .893, " 1883. 



" 178, Heading of column 5, for Wheeler, read Willing. 



