LARVA AND PUPA. 



539 



given, and was drawn from a specimen in the East India Museum. 

 The pupa is also drawn, so as to show the method by which it 



Fig. 290. —Larva and pupa of Ornithoptera. 



attaches itself to plants by means of a tuft of silken cords at the 

 tail and a pair of bands at the sides. 



The three figures which here follow represent one species, 

 Papilio pronomus, and sovve to show the great difference that 

 exists between the sexes. The first illustration shows the upper 

 surface of the male insect. The upper pair of wings are velvet 

 black and emerald green, the colours being disposed as shown 

 in the illustration. The green is more or less speckled with 

 black, which appearance is shown by the microscope to be due 

 to missing scales. The ornithological reader will probably re- 

 member that the black spots which are so often found on the 

 breasts of humming-birds are produced in a similar manner, the 



