30 



BoisDUVAL, Spec. Gdn. //. 455 (1836) Pieris Hyparete. 



Snell. v. Volx., Mon. d. Pier. /. 9 (1865) . . . . „ „ 



PiEPERS, Tijds. V. Etit. 19 /. 154 (1875) Cathaemia „ 



Distant, Rhop. Mai. p. 292//. 24y;;^. 13, 14 (188- — 86) Delias „ 



Semper, Schtn. d. Phil. I p. 231 //. 36; //. B. fig. 8 



(1886—92) 



One of the most common butterflies in Java, chiefly in the lower districts ; 

 I found it even on the little coral island of Edam at about an hour's distance 

 to the north of Batavia. 



W. J. Batavia (2 — 14), Depok (95), Buitenzorg (265), and also in the 

 Salak and Gedeh mountains (+ 1 500). 



C. J. Touban (2) on the north coast, in the provinces of Tegal and 

 Kediri (+ 500) and at Jogjokarta (113). 



E. J. Sourabaya situated in the low country near the sea, Berbek (13), 

 Kediri (64), as well as in Madura. 



The eyes, during life, are pale bluish grey. In consequence of the irregu- 

 larity of the evolutional process, there exists colour-dimorphism between the sexes, 

 namely in that period in which the covering by the black is again decreasing, 

 which decrease has much further advanced in the 6 than in the ?. I possess, 

 however, some $ from Java, on whose upper-side the black has already more or less 

 been replaced by white, though not yet so much as in the 6, and whose colour 

 for this reason forms a transition to that of the c?. In general on the upper- 

 side of the one ? there is much more black than is the case with the other; 

 which is also the case with the black near the apex on the upper-side of the cf . 

 So the more advanced stage of the (^ of this species in the process of the 

 colour-evolution is also indicated by the circumstance that, as a rule, there 

 has remained more yellow on the under-side of the 9, though sometimes this 

 yellow has also already partly changed into white, and that also the white 

 streaks near the apex on the upper-side of the fore-wings of the cT are still 

 more yellowish in the $. This is especially the case in the few specimens that 

 I possess from E. J. and from Madura, in which also the shade of the 

 upper-side is, in general, a little yellowish ; but also in a $ from Bandoung in 

 W. J. I found the same thing, and the $ figured by Cramer, also shows 

 those yellow streaks in a specimen, which is said to have been caught at 

 Semarang in C. J.. Snellen v. Vollenhoven mentions a 9 from Java, whose 

 under-side was the same as that of the <i'. The red spots on the black terminal 

 margin of the under-side of the hind-wings in some .specimens are also consider- 

 ably smaller than with others, owing to a larger extension of the black. 



