Recently published by Messrs. Longman §- Co. 



In Two thick Volumes, 8vo. Price 2/. 7«. 

 AN 



INTRODUCTION 



TO THE 



MODERN CLASSIFICATION OF INSECTS, 



FOUNDED UPON THEIR NATURAL HABITS AND CORRESPONDING 

 ORGANISATION : 



WITH OBSERVATIONS ON THE 



ECONOMY AND TRANSFORMATIONS OF THE DIFFERENT 

 FAMILIES. 



TO WHICH IS ADDED, 



A DESCRIPTIVE SYNOPSIS OF ALL THE BRITISH GENERA. 



AND 



NOTICES OF THE MORE REMARKABLE FOREIGN GENERA. 

 BY 



J. O. WESTWOOD, F.L.S., &c., &c. 



ILLUSTRATED BY 



COLOURED FIGURES OF THE DIFFERENT ORDERS OF INSECTS, 

 AND BY A GREAT NUMBER OF WOOD-CUTS, 

 EACH CONTAINING NUMEROUS FIGURES OF THE DIFFERENT STATES OF 

 EACH FAMILY, STRUCTURAL DETAILS, ETC. 



The object of this work is to occupy a place in Entomological literature 

 intermediate between such general works as the " Introduction " of 

 Messrs. Kirby and Spence, and such generic and specific ones as the 

 " British Entomology " of Mr. Curtis and the " Illustrations " of Mr. Ste- 

 phens. In this point of view this work is a necessary sequel to the former ; 

 there being no single work which a student could have previously taken 

 up as a guide to the principles of classification, and in which these prin- 

 ciples are developed in the distribution of the orders and families. The 

 work commences with general observations upon the structure and classi- 

 fication of insects. Each order is then taken up separately, and divided 

 into families, an account being given of the natural habits and transform- 

 ations, structural peculiarities, and natural relations of the insects comprised 

 within each family; with numerous illustrative figures of their characteristic 

 anatomical details and preparatory states, almost all of which are original. 

 At the commencement of each order and family is given a great number of 

 bibliographical references to the chief treatises and monographs which 

 have been written upon it. A complete Descriptive Synopsis of the British 

 Genera is added, as well as notices of the chief exotic forms. 



