(Bxuh, 



Page 19. — Sixth line from top, for " AucMandica" read " AucJclandicus." 

 Fourteenth line, for ^'ivhicli was slowly," read ^^ which were" &c. 

 Tenth line from bottom, for " Plesio capparis" read 

 ' ' Plesio capparis. ' ' 

 Page 20. — Twelfth line from bottom, for " Ritzlus," read " Eetzius." 

 Next line, for "«S'p. 7ion.," read " Sp. nov." 



Eighth line from bottom, for '' accuminate," read " acuminate." 

 Page 21.— Eighteenth line from top, for " Unio trimidus" read 

 " U. tumidus," and for " Ritzlus" read " Retzius.''' 

 Twenty-third line, for accuminates, read acuminates. 

 Twenty-sixth line, for " Oibbosus/' read " gibbos^is." 

 Seventh line from bottom, after Tasmania insert ; instead of , 

 Page 22.— Second line, for U. Pachodon, read U. pachodon. 



Eighth line, for " our U. Johnstoni," read " U. Johnstoni." 



Tenth line, for Aucklandica re&d AucUandicus. 



Eleventh line, for inflata read inflatus. 



Thirteenth line, omit m.s. before species. 



Fifteenth line, for Saoidberger, read the Messrs. Sandberger. 



Twenty-second line, for Genus Anodonta Cuvier, read Genus 



anodonta, Cuvier. 

 Second line from bottom of note, for ii.s. read U.S. 

 Page 23.— Description of the Figures :— The fifth line below tliis heading 

 should end at nat. size. 

 Anodonta Tamarensis, Etheridge, jun., is the heading for 

 description of figures 3 and 4, as Unio Johnstoni is for 

 figs. 1 and 2. 

 Fifth line from bottom, insert comma after valve. 



