ERRATA. 
Page 33, line 5, after Report, read 1853 and ’4. 
Page 34, insert Genus Poecilichthys , Ag. between numbers 1 and. 2. 
Page 38, second line, for 2 I -6 read 2$. Wherever, in this paper, two figures 
are separated by a hyphen, they should he written in the form of a common 
fraction. 
Page 40, line 11, for Aphredodereus read Aphredodtrus ; under No. 40, for 
gruuniens read grunniens. 
Page 44, No. 71, for chrysochrous read chrysoddoris ; for J. N. read J. W. 
Page 45, No. 74, for E. L. read F. L. 
Page 47, after 103 insert the following: — 103h C. analostoma, Grd., Silver-fin. 
Every where abundant through central Illinois. Occurs less commonly further 
north. 
Page 52, Note 2, for der read den; for Archiev. read Archiv. 
Note 3, for des read der; for Wein read Wien. 
Page 53, 8th line, for M. Bary read DeBary. 
Note 7, for der (Brandpilze) read die. 
Page 54, for Peronosporise read Peronosporese. 
Page 55, 8th line, for hauptoria read haustoria. 
14th line, insert (12) after six, and add one to each of the three 
reference numerals following. 
5th line from bottom, omit (15). 
2d line from bottom, insert (16) after Common. 
Page 56, 10th line, 2d paragraph, in stead of ’75-6 read ’74-5. 
15th line from bottom, for pappillate read papillate. 
11th line from bottom, for Poltactis read Polyactis. 
Page 57, 7th line, for Peronosporice read Peronosporese. 
21st line from bottom, insert European before vine. 
Page 58, 8th line, for Peronosporise read Peronosporese. 
2d line, 2d paragraph, for 3 read 5. 
7th and 8th lines, 2d paragraph, for one to three read twelve to fifteen. 
4th line from bottom, for bignouioides read bignonioides. 
Page 68, No. 40, reduce Acridium differentiale, etc., to a synonym, and insert 
above it C. differentialis, Thos. 
Page 72, Plate II, fig. 1, for Melanispora read Melamspora. 
Page 73, Plate III, fig. 3, for 3 read 5. 
Plate III, fig. 5, for 5 read 3. 
Plate III, fig. 7, for Plycinidia read Pycnidia. 
Plate IV, fig. 12, for fresii read friesii. 
P 
