t 7° 1 



matically. A judicious claflification of 

 them gives life and fpirit to the fcience, 

 and makes each infect as it were declare 

 its own name. For this part we are- 

 entirely indebted to Linnseus, who firft 

 reduced them into certain genera, by 

 giving them diftincT: characters. 



The claffes of infecls are feven: 



i. Coleoptera, have cruftaceous Ely- 

 tra, which join together, and form as 

 it were a longitudinal future down thc 

 back of the infecT:. (See explanation of 

 plate 2.) 



2. Hemiptera, have moft commonly 

 their upper wings cruftaceous at thc 

 bafe, or of a middle fubflance between 

 Elytra, which are of a coriaceous, and 

 foft wings, which are of a membra- 

 nous texture. The upper wings do not 

 meet by any longitudinal future, and the 



mouth 



