298 



NATUEAl HISTORY. 



506. The insects of the order Aphaniptera, the Fleas 

 and their allies, have only the most indistinct rudiments 

 of wings ; but the metamorphosis is complete. The lar- 

 vae inclose themselves in small silk cocoons to pass into 



the imago state. The 

 common Flea, a mag- 

 §!=? nified representation of 

 which is given in Fig. 

 231, has a curious ap- 

 paratus for sucking 

 blood, which is very- 

 beautiful as examined 

 with a microscope. 

 This insect, like other 

 great leapers, as Grasshoppers, Frog-hoppers, etc., has 

 very large hind legs. 



507. In the order Apte- 

 ra, or wingless insects, are 

 found the different kinds of 

 Lice which infest different 

 animals. In Figm-e 232 is 

 represented the common 

 g Louse; at a of the ordinary 

 size, at h magnified. At c 

 is one of its legs magnified ; 

 at d are its eggs, also mag- 

 nified. 



Fig. 231 Flea. 



Fig. 232 Louse. 



Qiiestlons. — What is said of the haustellate apparatus of the Hemip- 

 tera? What gives them their name? What is said of their meta- 

 morphosis? How are the Cicadas an exception to this? What is 

 said of the Eed-eyed Cicada ? What of the Frog-hoppers ? De- 

 scribe the Aphidse and their hahits. What is said of their honey- 

 dew? What is said of the scale-insects? What of Cochineal? 

 What is said of some aberrant bags of this order ? What is said of 

 the extent of the order Diptera ? What of the size of these insect? ? 

 What are their peculiarities? What is said of their larrse ? What 

 is said of Flies ? What are Cheese-hoppers ? Describe their mode 

 vf leaping. Describe the larvse of the common Mnsquito. Describe 



