ERRATA. 



Page 49, in Foot-note, for "170,000" read " 189,000." 



101, line 23, for " sepals, 4- valvate " read "sepals 4, valvate. " 

 107, ,, 39, change parenthesis from before " Meogeton," to 



commencement of line. 

 145, ,, 31, for "unitica" read "matica." 

 184, in Foot-note, for "scientific" read "specific." 

 165, line 7, for "extinct" read "recent." 

 167, ,, 21, for "Turritella" read " Tornatella. " 

 222, ,, 48, for "our" read "one." 

 285, ,, 30, for "instructive" read "instinctive." 

 289, ,, 29, for "quarrel" read "general." 

 371, ,, 53, after "rocks," for full-stop insert a comma. 

 388, ,, 50, for "white-crested" read "white-breasted." 



