PREFACE. 
Vll 
determining Rodolia iceryce as a new species. I am 
indebted to Mr. S. D. Bairstow for figures and a 
series of observations from life on Icerya purchasi or 
Australian Bug, and its insect destroyers in S. Africa • 
and to Mr. Frazer S. Crawford, Inspector under the 
Vine, &c., Protection Act, and Government Lecturer on 
Economic Entomology, Adelaide, South Australia, for 
some excellent figures from life of I. purchasi, taken 
by himself at Adelaide, and information bearing on the 
subject. I am likewise indebted for information to the 
Government Report on the Australian Bug in South 
Africa, by Prof. Roland Trimen; and further to the 
kind courtesy with which Prof. H. Comstock, of Cornell 
University, New York State, U.S.A., has permitted me 
to use his excellent figure of. the pest under considera¬ 
tion ; and besides assistance mentioned at the points 
where it is quoted, I must again strongly express my 
sense of the thoughtful and kind courtesy of Professor 
Riley in sending over to me in proof the forthcoming 
pages of his valuable paper, and other documents 
bearing on the subject. 
ELEANOR A. ORMEROD. 
Dunster Lodge, near Isleworth, England, 
July, 1887. 
