ERRATA. 



In the table of contents : 



Fifth paragraph, for ten plates on nine sheets reacl nine plates on eight sheets. 



In the Historical Sketch : 



Page 216, 22d line, read Charles W. Eliot. 



" 6th " from bottom, for from all read from that of all. 



" 217, 12th " after loith insert the chief causes of. 



In ]Mr. Soudder's memoir : 



Page 33, line 9 from the bottom, for confidentially read confidently. 



In Dr. Farlow's memoir : 



Page 3, note 2, for Ustitaginees read Ustilaginies. 



" 6, 9 til line from top, for Euromyces read Euurotnyces. 



" 7, 1 8th " " '' " hymeniferus read hymeniferous. 



" 9, 5th " " bottom, for varies read vary. 



" 11, 4tli " " top, for Berke read Berk. 



" 12, 10th " " " " fig. 17 read///. 16. 



" 18, 12th " " " " Gasperrini read Gasparriin. 



" 20, 6th & 10th lines frcuu top, for thuyokles read thyoides. 



" 21, 7 th line from top, for gymnosporangium read Gymno sporangium. 



" 24, 13th " " " " luminata read liuninatum. 



" 31, 10th " " " " tuhtrcules read tubercles. 



" 31, 23(1 '' " " " pseudoperidis read 2yseudoperidiis. 



" 82, 19th " " " before present insert the. 



" 33, 9th " " " for R. lacerta read R. lacerata. 

 Ovvino- to the absence of the writer during the printing of this article a considerable part of the proof 

 could not be submitted to him for revision. 



In Prof Morsf's memoir : 



J'age 7, 17tli line from top, iov fore read hind. 



In Prof. James' memoir : 



Page 12, 10th line from bottom, for right read left. 



'■ " 9th " " " '• left read right. 



" 30,8 th '' " top, for wor/c; read wo MOJ-A;. 



(V) 



