ZOOLOGY. 



227 



Food, animal and vegetable substances ; these cast their 

 shells or skins like the preceding genera. 



IS. Scolopendra. Centipede. Antennce setaceous ; bodi^ 

 depressed, elongated ; legs numerous, equalling in num- 

 ber the segments of the body on each side ; feelers twoj 

 setaceous. 



These are a disgusting tribe, frequenting dark and noisome 

 places, as under stones, or in decaying wood, some few are 

 found in fresh, and fewer in salt water, they prey on other 

 insects, and decaying animal substances. 



14. Jiiliis. Antennce moniliforra ; two, jointed ; 6oc(^ 



nearly round ; legs very numerous ; Jeet twice as many 

 as the segments of the body on each side. 



This genus is found abundantly in the decaying mould 

 within hollow trees, and particularly abound in putrid 

 fungi ; when disturbed, they roll themselves up in a spiral 

 form. All the genera in this order^ are instantly killed bj 

 emersion in spirits. 



We shall now proceed to the methods of collecting Insects, 

 which are of two kinds, by breeding them from the egg or 

 Caterpillar, or by catching them in their perfect or tly 

 state. Of these, the former is much to be preferred, as 

 besides the pleasure arising from observing their gradual 

 developement from the egg tp the perfect Fly, we can destroy 

 them previous to their having injured themselves by flight or 

 otherwise ; the difficulty of procuring the most beautiful and 



