LEPIDOPTEEA. 177 



The first section contains those which fly during the day, which 

 have club-shaped antennae, and which ha^e their four wings entirely 

 free, and standing perpendicularly* when the insect is at rest. 

 They are called Butterflies, or Rhopalocera. This section is 

 divided into a number of families, which comprise many genera. 

 We will content ourselves with calling the attention of the reader 

 to some of the most remarkable of these groups, and to those species 

 which, either on account of their beauty or abundance, strike, or 

 ought to strike, the attention of every one. 



In the family of the Papilionida, we will mention the genera 

 Papilio, to which belong the Swallow-tailed butterfly (Papilio 

 machaon], Papilio podalirius, &c., and Parnassius, of which we 

 will notice Parnassius Apollo, and Parnassius mnemosyne. 



Fig. 139. Swallow-tailed Butlerfly (Papilio machaon.) 



The Swallow-tailed butterfly is found plentifully in the fens of 

 Cambridgeshire, and Norfolk and Suffolk, and very commonly in 

 the environs of Paris. It is seen from the beginning of May till 

 towards the middle of June ; then from the end' of July till Sep- 

 tember. It frequents gardens, woods, and above all fields of 

 lucerne. It is easily taken when settled, particularly at sunset. 

 This is one of the largest and the most beautiful of the 

 * There are exceptions to this. ED. 

 N 



