116 



THE COLOURS OF ANIMALS 



the food-plant, Orange, they were of a similar colour 

 (see fig. 25) ; when fixed to dead branches covered 

 with withered, pale yellowish-green leaves, they re- 

 sembled the latter (see fig. 26). One of the cater- 

 pillars * affixed itself to the wooden frame of the case, 



Fig. 26.— The pupa of Papilio nireus 

 attached to plant (^Vepris lanceo- 

 lata) with withered yellowish-green 

 leaves. 



Fig. 27.— The pupa of Papilio nireus 

 attached to woodwork. 



and then became a yellowish pupa of the same colour 

 as the wooden frame' (see fig. 27). The case was 

 made partly of purplish-brown brick and partly of 

 wood, and one of the pupae, attached close to the 

 junction, was believed by Mrs. Barber to have assumed 



