Tlie Bionomics of Smifh African Insects. 289 



B. Historical 415 



C*. Tlie Demand mi ion hij Guy A. K. Marshall lloit, Precis 



siiuiii is the Wet Fhase of P. antilope 418 



I). The Habits of the two Seasonal Pliases of the South 

 African Species of the Ocniis Precis, and the Statimis 

 they respectively occupy 420 



E. Evidence of Adaptation in the cons2nr.noM.s nnder-siiles of 



the Wet-Season Phases uiinost equal to the proof of it 



in the cryptic Dry Phases 424 



F. The severity of the Struyijlc for Existence avuDiri Inscris 



in tlie African Dry Season as cotupared ifith the Wet. 

 The relation of the Seasonal Changes in Precis to those 

 of other Butterflies 432 



Cf. The succession of the two Sacsonal Phases of Precis 



sesamus in Nature 44.3 



H. TJte attempt to control tlie Phases of P. sesamus ami 

 P. arcliesia 61/ the artificial application of 3£oisti(re 

 and Heat to the earlier stages. Suggested lines of 

 Experiment 450 



I. The Bearing of the Seasonal Phases of Precis upon the 



Science of Insect Systematics 458 



29. The Gregarious Instinct in Hybernation and Emi- 



gration OF Insects. (E. B. P.) 460 



30. Description and Discussion ob' Material bearing on 



Mimicry in South Ab'rican EHorALOCERA collected 

 BY Guy a. K. Marshall, and the Record of 

 Observations made by him. (E. B. P.) 466 



A. Black-and-White Amauris-like Group 466 



B. Limnas chrysippus-like Groups 468 



C. Tlte Origin and Meani>aj of the Three Chief Forms if 



Limnas chrgsippus 473 



D. A study of Mimetic Forms mag enable us to reconstruct 



the Lost Stages through U'hich the Older Model has 

 2}assed 482 



E. Anuiuris echeria-like Group : marked Secondary Resem- 



blances bettveen the Forms -inlmicking echeria . . . 484 



F. Tlie Origin of the black-marked golden-brovn Truengle 



at the base of the Hind-Wing under-side in many 

 Ethiopian Butterflies 488 



G. Compound Group containing Representatives of all the 



three previously described. Species probablg entering 



ttoo Groups 490 



H. Groups of Synap)Osematic Aeneas captured <'t the same 



Place and Time 492 



TRANS. ENT. SOC. LOND. 1902. — PAUT III. (NOV.) 20 



