ERRATA. 
VOL. IV. 
Page. 
26. Line 13 from top, insert “in running water.” Do., middle 
par., for ‘““Manshell” read “Manwell.” 
30. For “Prescott” read “Pescott.” 
32. For “Deudy” read “Dendy.” 
115. 2nd line for bottom should be 15th from bottom. 
134. For “tractiopod” read “brachiopod.” 
154. 6th from top, for “laval” read “larval.” 
192. Number of page should be 182. 
