INTEODUCTION. 



The order Coleoptera may^be roughly charticterized as follows : — jSIoutk 

 mandibulate ; prothorax free and not agglutinate as in the Hymenoptera, 

 Diptera, and Lepidoptera ; anterior wings (elytra) horny or leathery, 

 more often the former, as a rule united down the back by a straight 

 suture ; posterior wings membranous, longitudinally and transversely 

 folded beneath the elytra ; occasionally the posterior wings are rudi- 

 mentary, and in such cases the elytra are often soldered together along 

 the suture ; this often appears to be a result of the circumstances under 

 which tlic insect lives, as occasionally a species is found Avith wings in 

 one locality and without them in another. 



Fitr. 1. 



Fiff. 2. 



Pupa of 15oi! I'lijiM of Hoc 

 (Front). (Protilf). 



Pupoo of Diptera. 



1. Pupa of I)rotie-% still 



in larva skin. 



2. Ditto, vvitli larva-skin 



rcuiovnd. 



3. Ditto of Antliomyia. 



4. Ditto of Mv'ctobia. 



Pupa of Dy. 



tiscus. 



Pupaof Spliinx- 



Motli. 



motamorphosos of the Coleoptera are complete with the exception 

 lupa, in which, although it is inactive, the parts of the perfect 



The 

 of the 

 insect are alwa}s distinctly traceable 



a 



