CLINTON GROUP. 



Illustrations No. 7 and 8, transposed. 



NIAGARA GROUP. 



No. 11 is repeated at the head of the page over Slrophoncnn. The numbers in this one and the five following ones 

 should be made to correspond with those on the opposite pages, viz. 12, 13, 14, 15, 16, 17. 



In the names and references for No. 13, DcUhyrissinuahts, with its synonymes, follows in the same line with Delihyvis 

 fkcemplicat-a ; this should commence the line below, preceded by fig. 8. 



CORNIFEROUS LIMESTONE. 

 In the illustration No. 38, fig. 8 is accidentally removed from Strophomena liiuaia (See page 175 of this Report). 



GENESEE SLATE. 

 Illustration 51 : the numbering of fossils, after 4, should be 5, 6, 7, 8 (See page 223 of Report). 



CHEMUNG GROUP. 

 Illustration 59, fig. 2, AvicvJa acamtkoptcra, name omitted. 





