The Bionomics of South African Insects. 423 



shade. Found on the coast belt and also in the interior, 

 but, south of the Zambesi, only in patches. 



II. Woodland country, without timber. Trees small, 

 affordino- liaht shade. 



III. Open country, without trees. Nothing higher than 

 small scrub. 



I. The following species are only found in the forest : — 



1. P. tugcla. It has been already explained that the 

 wet-season form exposes itself more freely (p. 421). 

 Both phases have leaf-like under-sides, but the dry 

 has a more hooked tip to fore-wing and more pro- 

 longjed anal an»le to hind-wingf. 



2. P. elgiva. No difference in habits observed. The 

 slight differences in appearance are due to a more 

 hooked tip with a somewhat different direction, and a 

 more leaf-like under-side in the dry phase as com- 

 pared with the wet. 



8. P. natalica. No difference in habits observed, both 

 phases being low settlers. Ocelli and white spots on 

 the under-side tend to disappear in the dry phase. 

 II. The following species are found in the woodland 

 country : — 



I, and 2, P. antilopc and P. actia. In both these 

 species the dry-season phase and the female of the 

 wet are found in the more shady places, viz. the lower 

 slopes of kopjes. The $ of the wet phase is usually 

 found on the less-wooded higher slopes. 



3. P. artaxia. The habits are like those of the two 

 preceding species. Towards the forest belt in Umtali 

 the dry phase encroaches on the wet, and in the low 

 country between Umtali and the sea Selous never saw 

 the wet form at all. The larger dry form has a far 

 more leaf-like under-side, with a mid-rib, and hooked 

 tip to the fore-wing, wanting in the wet. The dry 

 phase is also more wary. 



II. and III. The followdng species are found in open as 

 well as woodland country : — 



1, and 2, P. sesamus and P. archesia, have very similar 

 habits. The dry phase generally frequents the wooded 

 and the wet phase the open country. In entirely 

 open country the former would occur on the lower 

 slopes in whatever shade is to be found. In entirely 

 woodland country the dry phase would be found on 



