( cxxvi ) 



approaching those of the examples taken Nov. 11-27, l'.HT. 

 These !) worn specimens are nearest to semitypica, Auriv., 

 and one of Nov. 11 may actually belong to this form. The 

 others differ in opposite directions on the two surfaces, the 

 upper being wetter in the absence or very faint development 

 of the blue transverse streaks in the F.W. cell, the lower, 

 of a uniform dark brown in both areas, drier in the traces 

 of variegation caused by obscure reddish streaks in the basal 

 area, which in the F.W. follow the upper surface pattern ; 

 these streaks are only present on the H.W. of some of the 

 individuals, and here there is no correspondence with the 

 upper surface pattern. In one example of Nov. 11 the 

 reddish markings are accompanied by black streaks. It is 

 unfortunate that all these interesting forms are in such bad 

 condition. 



Although, as Aurivillius states, both staudingeri and still 

 more semitypica are transitional in pattern towards the wet 

 phase, they are both very far on the dry side of intermediate, 

 the form of the wings — a difference far more important than 

 colour or pattern — remaining as in the full dry phase. 



A single example of limnoria, Klug, wet f. taveta, Rog., 

 from Itigi, Oct. 12, is omitted from the table. Aurivillius 

 keeps limnoria as a distinct species, but transitional forms 

 occur between it and archesia f. pelasgis, and the Rev. K. St. 

 Aubyn Rogers, who has taken limnoria in ex-German East 

 Africa and is familiar with it in B.E.A., believes that the 

 two are conspecific. Further breeding experiments and struc- 

 tural investigations are greatly needed, as also with pelasgis 

 in relation to coelestina, Dew. There is in the Hope Depart- 

 ment a series of specimens, collected at the N.E. corner of 

 the Victoria Nyanza by Major C. A. Wiggins, which includes 

 both wet and dry forms of coelestina and also butterflies 

 with the upper surface pattern oi pelasgis, or its var. chapunga, 

 Hew., combined with an under surface apparently transitional 

 towards the wet forms of coelestina. Omitting the considera- 

 tion of limnoria, by far the commonest and in most localities 

 the only form of archesia in British East Africa and Uganda 

 is the wet-phase pelasgis, a little short of the full wet form 

 from Smith Africa. See Nov. Zool., m. L904 3 pp. 318. 34!), 



