ERRATA. 
PLATES. 
Plates XL and XLIV, for WirrLesia read WITLESIA. 
Plates XXXV—XLIV. The photographs are by Mr. F, Noad Clark, and 
are attributed in error to Mr. A. E, Tonge. 
In Plates LVI and LVII the names of the species figured have been 
transposed. Plate LVI represents Hydroecia americana, and Plate LVII, 
H,. crinanensis. 
The date of the first set of Proceedings, for 1840, on p. 763, should be 
Feb, Ist, 1841, instead of Jan. Ist, 1841, 
The fourth date from the end, Dec. 1st, 1846, should be Jan. Ist, 1847. 
The last two dates should be 1848, not 1847. 
