PREFACE. xiii 



and Mr. H. Barber; a large number from Mi-. A. W. Eriksson ; 

 and a considerable collection made by Mr. F. C. Selous. 



The four gentlemen last named have all contributed in 

 addition many butterflies from the Tropical Interior extending 

 to the Zambesi Valley ; and for many specimens from Damara- 

 land I am indebted to the late Mr. C. J. Andersson, Mr. J. A. 

 Bell, Mr. J. J. Christie, and Mr. W. C. Palgrave. 



To the kindness of Mr. P. MacOwan, Director of the 

 Botanic Gardens in Cape Town, I am indebted for the identi- 

 fication of many food- plants of the larvae of South- African 

 butterflies. 



The assistance rendered me by entomologists in Europe 

 has been invaluable, and my only regret is that my visits to 

 England have been too few and brief for more fully availino- 

 myself of the liberality with which access to their collections 

 was awarded me. The treasures of the magnificent National 

 Collection in the British Museum have always been open to me 

 through the courtesy of the oflicers of the Zoological Depart- 

 ment, and I cannot sufficiently thank my friends Mr. A. G-. 

 Butler and Mr. W. F. Kirby for the cordial manner in which, 

 for many years past, they have in every way furthered my 

 researches. The limits of a preface preclude a full mention of 

 the many friends who have lightened my labours, but I give 

 myself the pleasure of specially thanking Mr. H. W. Bates, Mr. 

 W. L. Distant, Mr. F. Du Cane Godman, Professor R. Meldola, 

 Mr. F. Moore, Mr. 0. Salvin, Mr. H. Grose Smith, Mr. A. R. 

 Wallace, and Professor Westwood. 



Among Continental entomologists, I must express my 

 special obligations to Mr. P. 0. C. Aurivillius, of the Royal 

 Museum in Stockholm, who not only sent for my examination 

 typical specimens from Wahlberg's South-African collections 

 described by Wallengren, but also procured for me some ad- 

 mirable figures of a few unique types in the same collections, 

 besides presenting me with his own valuable publications treat- 



