and there by yellow- whitish. Of two caterpillars in a rather dark chip-box, in 

 which there was only a dried leaf, one changed into a pale grey pupa; but 

 when afterwards a fresh dark green leaf was given to the other caterpillar, this 

 one on the contrary changed into a pale green chrysalis. 



From a chrysalis formed on the 21^' or 22'^^ of May, the imago emerged 

 on the 28"^ of May. My figures are better than those by Moore; Stoll 

 also gave figures of the larva and the pupa, the latter, however, is not beautiful 

 and the former is totally irrecognizable. 



10. Nero F. (PI. I, fig. 7 a, b, c, II, fig. i). 



Fabricius, Efit. Syst. Ill \ p. 153 A^. 471 (i793) .... Pap. Nero. 



Donovan, Ins. of India pi. 3 2 fig. i ( 1 800) , 



BoisDUVAL, Sp^c. Gen. I p. 485 (1836) Pieris 



Snell. v. Voll., Mon. d. Pier. I p. \1 (1865) „ 



Distant, RJiop. Mai. /. 311 //. 2 a, fig. 9, 10 (1882 — 86). . Appias 

 Bingham, Fauna ofi Br. India p. 202 pi. \^ fig. 108 (1907) . „ 



W. J. I never saw this species in the environs of Batavia, but it is common 

 at Depok (95) and at Buitenzorg (265). I received it also from different parts 

 of the province of Prajangan ; among others from the vicinity of Pelabouan 

 Ratou (Wijnkoopsbay) (150) on the south-coast. 



C. J. ? 



E. J. Malang (445). Fruhstorfer found his species much more common 

 in East Java than in West Java, especially in the southern mountains. 



This fast-flying butterfly, whose eyes during life are pale green, is common 

 in woody regions principally and is closely related to the species of Celebes 

 P. Zarinda Bsd. ; perhaps a closer examination of the sexual organs will prove 

 that both are only races of the same species, as f. i. has already been proved of 

 Papilio Memnon L. of Java and P. Ascalaphus Bsd. of Celebes. In both the 

 original red colour has been preserved in its oldest forms; whereas, for the 

 rest, they show many differences in colour, according to the stage in the pro- 

 cess of the colour-evolution in which the races, the sexes or the individual 

 insects happen to be; in consequence of the ignorance about this phenomenon 

 these differences have been considered, partly at least, to be separate species. 

 Of both species there are 6 which are blood-coloured on the upper-side, also 

 some that are orange-coloured ; others that are of a pale brick-red, and lastly 

 such as are pale-yellow. Of the brick-red ones I have figured a specimen 



3 



