17 



secondaries the same process has caused a comparatively larger agglomeration 

 of these scales, which form a round black patch, contrasting in a peculiar manner 

 with the white, the same as occurs, probably produced by the same cause, 

 most distinctly in LycAENA HyLAX F., and in a less degree in other Lycaenae. 

 This matter has been already discussed in the Introduction. 



9. SuBvroLACEUS Felder (PI. XX, a, b, c). 



Felder, Novara Lep., p. 285, No. 368, Taf. 2)5^ fig- 27, 



28 (1867) Allotinus Subviolaceus. 



Distant, i?>^o/. i/ij/.,/. 452, 7a(5. 44, //V. 3 (1882 — 86) „ Alkamah. 



Staudinger, Iris, II, 5. 93 (1889) . Allotinus Subviolaceus, var. Alkamah. 

 Bingham, Fauna of Brit. India, BuU. II, p. 300 (1907) Allotinus Subviolaceus. 



W. J. Batavia (3 — 14); vicinity of the Tjiletou or Sandbay on the south 

 coast (± 150) 



C. J.? 



E. J.? 



Although on the underside of this species the same process of darkening 

 has been followed peculiar to many Allotinus species, displaying a uniform 

 light brown colour, with darker scales spread here and there, on the upper- 

 side the colour has been obstinately preserved, which probably belonged to 

 the Gerydinae in general before they were vigorously attacked by the darkening 

 process, that is, the colour of a Lycaenida which has faded to white, but owing 

 to a structural blue has become bluish in colour* and in which the darkening 

 process, as is the case with many of these Lycaenidae, spreads in broad black 

 or brown bands along the edges of the wings. The specimens that I have 

 bred are considerably smaller than the captured ones. 



I found the larva frequently on the leaves of nangka bknda (Anona 

 MuRiCATE L.) ; it was also brought to me as having been found on the young 

 leaves and young fruit of rojikem besar (?), but I never saw it feeding. Perhaps, 

 Hke those of some other Gerydinae it lives upon plant lice; it is certainly 

 carnivorous, as of two that I kept together in one box, one was speedily de- 

 voured bij the other. It is roof-shaped, the back higher than the rather sharply 

 sloping sides. The segments, distinctly separated from one another, end at 

 the sides in protruding knobs or warts. The back is sometimes lighter and 

 sometimes darker bark-coloured brown, with a not always distinct darker dorsal 

 stripe, and two light sub-dorsal lines. The posterior segments are mainly whitish 

 in colour. Head shiny black. The brown pupa has the characteristic shape 



