8 
form of a circular. It should be added, however, that injury during 
1901 was very light, although some damage was done over small areas. 
The season of 1900 was rather remarkable for irruptions of different 
forms of flea-beetles in various portions of our country, several species 
doing very considerable damage, in some cases unprecedented. 
Assistance has been rendered in the preparation of this bulletin by 
the writer’s associates, which is duly credited in its proper place: but 
it should be especially mentioned that Mr. F. C. Pratt assisted in the 
collation of the literature of many of the species treated. Credit is also 
due to Mr. Th. Pergande for some of the notes, and particularly the 
rearings made in earlier years, nearly all of those of a later date hav- 
ing been conducted by the writer. Twenty-six of the figures which 
illustrate this bulletin have been drawn by Miss Lillie Sullivan, under 
the writer’s personal supervision, from selected and fresh material 
wherever this was obtainable. 
F. H. Cuirrenpen. 
