236 



INSECTA. 



tinct head ; the mouth of the 

 perfect insect is a long spiral 

 proboscis. 



The butterflies, so conspi- 

 cuous for their beauty, are 

 well-known representatives of 

 this order ; and the usual 

 forms of these insects in the 

 larva, pupa, and imago state 

 are familiar to all (Jig. 105, 

 A, B, c). 



/3. Mouths with distinct 

 biting jaws. 



7th Order. Hymenoptera.* 

 Possessing four naked 

 wings traversed by ramose 

 nervures. Larvae generally 

 without head or feet, but 

 sometimes with both. Wasps, 

 Bees, Sec. 



8th Order. Coleoptera. 

 In this last order, the ante- 

 rior wings are converted into 

 dense horny cases 

 or elytra, be- 

 neath which the 

 posterior pair, a- 

 dapted to flight, 

 are folded up 

 when the insect 

 is at rest. The 

 larvae possess a 

 head, and are 

 sometimes pro- 

 vided with feet, 

 but not always. 



The Coleopte- 

 rous division of 

 the insect world 

 embraces the ex- 



* vprivtvos, a membrane; 



Fig. 104. 



