44 METAMORPHOSES OF 



the organs on to my finger when I touched its back. The 

 fluid has a very disagreeable and pungent smell, and it takes 

 more than one good scrub with soap and water to get rid of 

 it. On 1st January, 1879, more than half the cluster had 

 disappeared, and I captured about a dozen specimens. 



Pupa, a, Jan., 1879. 



The same day that I captured the caterpillars some of 

 them fixed themselves to the sides of the box I kept them in, 

 and the next day they changed to the chrysalis, resembling a 

 rotten twig of the orange ; but curiously enough I did not 

 find a single chrysalis on the tree on which the caterpillars 

 were feeding, nor on any of the surrounding trees. They 

 must have dispersed to a considerable distance. 



Imago l^' Full-fed, Jan. 3 ; Imago, Jan. 27, 1879 = 24 dys. 

 ^'^^°' (6, „ Jan. 2; „ Jan. 25, 1879 = 23 dys. 



On January 24th the first butterfly made its appearance, 

 having been three weeks in the pupa state. 



XLII. — Papilio Lysithous.* 

 Hectorides Lysithous, Hiibner, Samml. Exot. Schmett. 



(1816-41). 



Larva, a, Full-fed. San Paulo, Jan. 4, 1880. 



The caterpillar feeds on the leaves of the " Araticu " 

 (Rollinia?), and is very sluggish in its habits, spending 

 nearly all its time perfectly still in the centre of a leaf. It 

 possesses scent organs on the prothoracic segment, but it 

 requires a good deal of irritation to make it exert them. 

 The smell is not so strong as that of Nos. XXXI and 

 XXXVIII, Papilio Thoas and P. Evander. 



Pupa, a, Full-fed, Jan. 4 ; Imago, Jan. 22, 1880 = 18 days. 



* PApilio Lysithous is the Papilio whose metamorphoses are described 

 and figured in the Proc. Lit. & Phil. Soc, L'pool, for 1879-80, Vol. XXXIV., 

 p. Ixv. ; plate 1 ; the species not having then been ascertained. 



