X PREFACE. 



Of these figures (163 in all), upwards of 57, used by- 

 courteous permission of Messrs Blackie & Sou, Glas- 

 gow, N.B., are from the well-known figures by John 

 Curtis, given in his 'Farm Insects'; and 10 figures of 

 Moths from Newman's ' British Moths,' are inserted 

 by permission of Messrs. Allen & Co. The figures of 

 the Hop Aphis and American Blight Aphis are copied 

 from drawings by Mr. G. B. Buckton, F.R.S., in his 

 * British Aphides ' ; and the figure of the Bee Parasite 

 and Forest Fly, as well as two others of which the 

 source is acknowledged accompanying, are after 

 drawings by Prof. Westwood. The figure of Turnip 

 Sawfly caterpillars, and a few others, are inserted 

 by permission of Mr. T. P. Newman. 



About 54 of the figures are mainly from life, in 

 some instances drawn by myself, but for the most part 

 by Mr. Horace Knight, artist to Messrs. West, New- 

 man & Co. Of the remainder I think the source will 

 be found, for the most part, to be acknowledged either 

 beneath the figure or in the context, as, for instance, 

 in the case of the Liver Fluke, duly acknowledged as 

 from the paper of Prof. A. P. Thonas, and the Stem 

 Eelworms, copied by kind permission of Dr. J. 

 Eitzema Bos. 



