vi Preface 



Acknowledg)iH'iits. 



Wo gratctiiUy afkiiowlodge the generous gift of £100 from Mr and 

 Mi's P. A. ^lolteno towards the expenses of publishing this work. 



We are especially indebted to the following gentlemen and institu- 

 tions for access to material : Professor L.-G. Neumann (lately of 

 Toulouse) has kindly lent us all of his types and has presented us with 

 co-types wherever possible in exchange for similar specimens from our 

 collection. We have to thank Dr L. Lavarra (Rome), Professor Gestro 

 (Genoa Museum), Professor A. Brauer (Berlin Museum), Professor S. 

 Schenkling (Deutsches Entcmiologisches Museum, Berlin-Dahlem) and 

 Mr S. Hirst (British Museum) for tht- gift of co-types. We have 

 received numerous specimens from the Imperial Bureau of Entomology 

 (Mr Guy A. K. Marshall, Secretary) and from the many gentlemen 

 whose names arc mentioned as collectors in the text. 



The bracketed numbers accompanying the records of specimens 

 from different countries relate to catalogues in particular collections 

 severally indicated by a letter or the name of the collection before the 

 number. Thus all numbers preceded by " N " relate to specimens in 

 our collection; those preceded by "E" relate to specimens received for 

 identification from the Imperial Bureau of Entomology, London. Other 

 collections we have examined and determined are as follows : (Ash- 

 worth) = Dr J. H. Ashworth, Zoological Department, University of 

 Edinburgh; (Berlin Mus.) = Zoologisches Museum, Berlin; (D.E.M.) 

 = Deutsches Entomologisches Museum, Berlin-Dahlem ; (Genoa Mus.) 

 = Museo Civico di Storia Naturale, Genoa ; (Gowdey) = Mr C. C. Gowdey, 

 Government Entomologist, Entebbe, Uganda ; (Ind. Mus.) = Indian 

 Mu.seum, Calcutta; (K.) = Mr N. B. Kinnear, Bombay Natural History 

 Society; (Knuth) = Professor Knuth, Tierarztliche Hochschule, Berlin; 

 (Liverpool) = Liverpool School of Tropical Medicine; (SchiifFner) = Dr 

 W. Schiitfner, Deli, Sumatra; (Sweet) = Dr Georgina Sweet, University 

 of Melbourne, Australia. Where two numbers are connected by = 

 (thus E. 692 = N. 3153) the sign indicates that the specimens have 

 been divided between the two collections E. and N. 



As stated in Part II, we shall be grateful to readers who may draw 

 our attention to any errors and omissions. 



G. H. F. N. 



C. W. 



Cambridge, 



September, 1915. 



