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on which not even hair or other appendages have yet developed, has remained 

 in a very primitive state, so that in all of them the body deviates but little 

 from the original primitive form, thus constituting a considerable resemblance 

 between them, while the green colour is doubtless chiefly caused by the same 

 factor in them all, for instance the green of the leaves on which they feed. 

 Among leaves also, to however many species of plants they may belong, green 

 is an extremely common colour and the cause of this is well known. This is 

 also the case with those Rhopalocera whose larvae have still such a primitive 

 form, and the larvae of closely allied species it is wholly impossible or very 

 difficult to distinguish. Thus in the discussion of the Javanese Pieridae I pointed 

 out already that I could not find any difference between the larvae of Callidryas 

 ScYLLA L. and the earliest form (See Pieridae pi. Ill fig. 6a) of Callidryas 

 Pomona F., and that this is also the case with that of Terias Sari Horsf. 

 and the not yet quite grown up larva of Tekias Hecabe L., from which I 

 was warranted, I thought, in drawing the conclusion that Pomona F. with 

 the first mentioned Callidryas species and Hecabe L. with the other Terias 

 species, must have developed from the same primitive species ; the larvae of 

 C ScYLLA L. and T. Sari Horsf. have preserved the original form, but those 

 of the two other species have differentiated from it, so that, for the greater 

 part at least, they differ from it now. At the same time I hazarded the 

 supposition that the fact, that both these changed species seem to be much 

 more polyphagous that the unchanged ones, would have something to do with 

 it, and that consequently the change of food would have worked as a factor to 

 change these larvae. 



Now there are also other facts of larva biology, which may not pass unnoticed 

 here. Rather common at Batavia is the larva of a Heterocera species, determined 

 by Snellen in litt. as Leocyma Bateoides ; I have given a picture of it in 

 volume XL of the Tijdschrift voor Entomologic on pi. 4 fig. 1 1 , which larva is 

 dark red and lives in the kernel of the fruit of Durio Zibethinus L. Once 

 it happened to me, when eating a fruit of the Nephelium Lappaceum L., that 

 I found in the kernel this dark red larva. I preserved it to get the imago ; but 

 how great was my surprise, when after some time I noticed that the larva 

 had left the kernel and had turned into the chrysalis of a butterfly, out of 

 which there afterwards appeared the beautiful Lycaenide, Deudoryx Epijarbas 

 Moore. It is true, at that time I did not exactly examine this larva, because 

 I felt sure that I saw the common above-named species, which it greatly 

 resembled on account of its, for the rest not at all common, colour, and its 

 uncommon way of living. Is it not reasonable then to ascribe this likeness in 

 colour between two, systematically so little allied, larvae, to the same manner 



