402 INSECTS. 



+ Trojans. Generally black ; with sanguineous spots on- the 



breast. 

 ++ Greeks. Breast without sanguineous spots; an ocellate 

 spot at the angle of the tail. 

 C. Satyri. Lower wings dilated on the inner margin, into agrooTe 

 for the reception of the abdomen. 



B. Heleconii. Wings oblong, the lower ones short and rounded* 



C. Parnassii. Wings rounded, entirely, or partially naked. 



D. Wings rounded. 



a. Festivi. Lower wings distant at the inner edge. 



C Danai. Lower wings meeting at the inner edge and covering 



the base of the abdomen, 

 y. Nymphales. Lower wings forming a groove for the reception of 



the abdomen. 

 II. Hesperia. Feelers compressed and hairy at the base, the tip 



cylindrical and naked ; club of the antennas oblong and oftea 



hooked. 



. Rurales. Wings with obscure spots, 



C. Urbicolae. Wings with mostly transparent spots. 



These insects feed on the nectar of flowers, and the moisture 

 exsuding from trees ; the larves are active, and furnished with 

 tentacles and sixteen feet ; they are sometimes spinous and some- 

 times naked, and feed voraciously on the leaves of various plants ; 

 the pupe is naked, quiescent, and attached to trees or other sub. 

 stances, by filaments either from the tip or the middle. 



There is no tribe of insects that has been more accurately exa- 

 mined, or whose history has been so fully detailed. Reaumur and 

 Fabricius are the naturalists to whom we are chiefly indebted for 

 our knowledge of its extensive numbers, and very curious powers. 



Some of the species frequently cast their skin, besides under- 

 going those more considerable transformations which introduce 

 them into a new sphere of action. Before the fresh tunic is deve- 

 loped, the outer skin is seen to wither and lose the vivacity of its 

 colours, owing to the new coat which already covers the animal 

 beneath, and intercepts the juices which formerly circulated through 

 it: after some efforts this dried covering is rent towards the back 

 part of the head, where the fresh skin appears ; and through this 

 aperture the worm makes his escape, leaving his spoils behind. 



