16 METAMORPHOSES OF BRAZILIAN LBPIDOPTERA. 



and a thread round the thorax, to the underside of a branch 

 of a tree or the coping of a wall, or other similar situation, 

 and in that position undergoes pupation. 



( a, ^ 

 Imago. \ b, ? Full-fed, 10th March, 1880. 



Full-fed, 10th March, 1880.) 



Imago 30th „ „ j ^0 days. 



The butterfly emerges three weeks after pupation. It is 

 a very common species, and there are several broods in the 

 year, fresh specimens having been taken in the spring 

 (August and September), being one of the earliest of the 

 larger butterflies that appears after the cold season, and also 

 in December, and again in March and April. 



LXXVII. — Papilio Polydamas. 



Papilio Polydamas, Linn. Syst. Nat. i. 2, p. 747 (1767). 

 Drury, Exot. Ent. i., pi. 17, fig. 1, 2. 



Larva. Full-fed. San Paulo, Oct., 1881. 



This caterpillar feeds upon a species of Aristolochia that 

 is a rare plant in the neighbourhood of San Paulo, and 

 consequently the caterpillar is rare also. It is of a smoky 

 brown colour, marked with numerous diagonal dark stripes, 

 and is covered with short and slender fleshy protuberances. 

 On the first and tenth segments the lateral protuberances 

 are movable, and the caterpillar twitches them up and down 

 in an odd way as it walks. There is a V-shaped scent organ 

 on the pro-thoracic segment that is exserted when the insect 

 is annoyed. 



( a, Full-fed, 28th Oct., 1881. ] 

 Pupa. \ Imago, 24th Nov., „ j ^"^ ^^^^' 



\ b, Ichneumonised specimen. 



The caterpillar attaches itself by the tail and a loop 



