PREFACE. VU 



these friends my best thanks are due. 1 am, how- 

 ever, more especially bound to return my grateful 

 acknowledgments to Mr. INGALL, Deputy Principal 

 of one of the Stock offices of the Bank of Eng- 

 land. This gentleman, although his labors at the 

 Bank are sufficiently arduous, has yet found time to 

 make one of the finest private collections of in- 

 sects in this country, and is, besides, an ardent cul- 

 tivator of the sciences of Natural History and 

 Botany. 



The service which he has rendered to me in this 

 work is of such value, that the Volume could hardly 

 have been produced, in its present form, without his 

 aid ; for he made all the Drawings, which I have 

 been enabled to lay before my readers, and arranged 

 the plates for the artist. 



I have also to thank my pupils, Mr. LATHAM and 

 Mr. GREATREX, for procuring me various informa- 

 tion. 



To Mr. THOMPSON, the indefatigable and learned 

 Librarian of the London Institution, I have to tender 

 my grateful acknowledgments for the aid which he 

 afforded me in referring to works and in copying 

 plates. 



To -my old and kind friend Mr. JOHN BEADNELL, 

 Jun., I have, as on former occasions, to render my 

 best thanks, for revising the entire proof sheets of 

 this work. And my excellent friend Dr. FERGUS I 

 have also to thank for the compilation of the Analyti- 

 cal Index. 



