CLASS-BOOK OF ZOOLOGY. 141 



§ 585. The Butterfly that flies in the dusk of evening, 

 slowly and heavily, is called Hawk-moth, the Caterpillar 

 of which has generally splendid colors, and a hook- 

 shaped horn at the end of the back ; as for example, the 

 Potatoworm. 



§ 586. The Butterfly which flies only in the night-time is 

 called a Moth. The Caterpillars of Moths are generally 

 hairy. They change into a silky cocoon ; of which we 

 have an instance in the Silk-worm. 



§ 587. Moths prepare their cocoons from a tenacious 

 fluid, contained in two pouches, placed along the back, 

 beneath the stomach, and which they spin into very 

 fine threads by means of a peculiar tube placed behind 

 the mouth. 



QUESTIONS ON SECT. XXXV. 



581. By what are Butterflies distinguished? 



582. What do you know of the jaws, body, airholes, claws, and legs 

 of the Caterpillar V 



583. Into what does the CaterpUlar change, into what the cocoon, 

 and what do you know of the antenna?, feet, and tongue of the Butr 

 terfly? 



58-L What is a Day-hutterfly ? 



585. What a Hawk-moth'? 



58b. What a Moth ? 



587. From what, and how, do Moths prepare their cocoons 5 



SECTION XXXVI. 



Ath Order — Net-winged Insects : (Neuroptera.) 



§ 588. The Net-icinged Insects are distinguished by 

 having four net-like or trellised wings, which generally 

 glitter with colors of every hue, as the Dragon-fly. 



§ 589. The Dragon-fly (Libellula) is common every- 

 where, and is seen flying in all directions, for the purpose 

 of catching insects, which they devour by means of 

 their strong jaws. They are also frequently seen near 



