ll 
To Lieutenant-Colonel Alcock, C.I.E., F.R.S., I.M.S., Superinten- 
dent, Indian Museum, whose kindly advice has ever proved of incalcu- 
lable value to the writer, to Mr. G. Lewis, F.L.S., Sir George 
Hampson, Messrs. (2. O. Waterhouse, Gahan, and others of the British 
Museum staff, Mr. Distant, the late Mr. Buckton, F.R.S., the Rev., 
T.R.R. Stebbing, F.R.S., Mr. E, Ernest Green, Ceylon Entomologist 
and Mons. P. Lesne of the Paris Museum, Dr. L.O. Howard, and the 
staff of the United States Division of Entomology, to one and all the 
author owes a deep debt for assistance in identification work and 
valued criticisms and advice. Lastly, as the volume will itself show, 
much information of considerable value contained within its pages 
is the result of the unstinted aid afforded by the officers of the’ Forest 
Service themselves, and with them I would make special mention of 
the name of Mr. B. Ribbentrop, C.IE., late Inspector General of 
Forests to the Government of India, to whose recognition of the 
importance of the study of this branch of Forest lore we owe its 
present position. 
. EE. PU STBMBBING 
Came QueTTa; 
October 1905. 


