Page cv, line 12, for xciv read xcviii 



On plate opposite page 16, for Silvery Lamprey, 1 chlhyom v,~<> n concolor 



(Kirtland), read Black Lamprey, Lampetra wildcn Gage. 

 Page 42, line 16, for albula read Albula. ■• 



Page 84, line 7, for tilesius read Tilesius. 

 Page 140, under Notropis illecebrosus (Girard), substitute the following 



synonymy: Girard, 1856, Proc. Ac. Nat. Sci. Phila., 194 (Alburnops), 



J. & E., I', 268 (illecebrosus); L., 17 (shumardi). 

 Page 161 and 162, figures 40 and 41 should change places. 

 Page 164 and 165, figures 42 and 43 should change places. 



