28 



W. J. SoLikaboumi (600). 



C. J.? 



E. J. Province of Kedyry, Pouspa (630). 



Fruhstorfer, who possesses both sexes of this variety from E. Java, calls 

 them Parazerra. 



In mij opinion these three forms, which Snellen regards as three species 

 Celeno Cram., Alexis Stoll. and Cleodus Felder, should be reunited as one 

 species. That they are very nearly related, is shown by the fact that the male 

 genitals of all three varieties are identical. There is a great deal of confusion 

 about these forms ; it is said, for instance, that the Alexis form is the same as 

 that of the Celeno specimens of the dry season ; which is quite untrue, for, 

 not only do such sharply defined seasonal varieties not exist in Java, but 

 moreover I possess various specimens of Celeno found in different parts of 

 Java in the driest months, that in no way differ from specimens collected in 

 various months during the wet season. The differences between the three given 

 in various very elaborate descriptions, I have found upon acurate examination 

 not to exist as such ; but on the contrary it became very clear to me by the 

 comparison of many specimens, that we here have to deal with specimens of the 

 same species, which are however in different stages of colour evolution, in 

 which the fading process, peculiar to it, is not equally advanced. The upper- 

 side has originally been blue, as still appears so distinctly in the Cyaniris 

 group ; in the form Cleodus Felder it has survived the most, and the colour 

 may still be described as whitish blue; in the form Celeno Cram, the fading 

 has proceeded further and the colour can only be called bluish white, which 

 often even merges into pure white ; in the Alexis form this is always the case. 

 On the underside of the primaries, which bear a peculiar marking of white 

 vertical lines also characteristic of L. SAruRAXA Snell., this process can be 

 observed even more clearly. The ground colour is here, in the form Cleodus 

 Felder — which, as regards the blue on the upperside is apparently also the 

 oldest — usually bright brown, against which the fine white vertical lines show up 

 distinctly. But in the form Celeno Cram, the ground colour is much faded, 

 its white lines especially at their lower end are often broader, and merge into a 

 sometimes considerably broadened white band along the under edge, which is 

 not yet present in Cleodus Felder. There is evidently much more white here, 

 and a general fading. 



In the form Alexis Stoll. all this has greatly increased. These three 

 forms can be easily distinguished, but the mutual differences are clearly seen 

 to be only differences in the stages of the process of fading. 



There are some very small specimens of this species. It is also worthy 



