A Monograph of Egyptian Diptera. 



préface:. 



The présent volume is tlie first part of a Monograph of the 

 Egyptian Diptera, which rt is my intention to issue in separate 

 parts, as they are complétée!. Each part will deal with one or more 

 families and will be complète in itself, and therefore there is no 

 necessity to adhère to any spécifie order of issue. The better known 

 groups are being completed first, in order to leave time to obtain 

 a fuller knowledge of the more obscure members of the Order. 



.Sucli a large work is perhaps rather beyond the capacity of a 

 single individual and the writer would hardly bave attempted such 

 an ambitions project without the promise of help from many of the 

 leading Dipterologists such as Profcssor Dr. M. Bezzi, Dr. J. Ville- 

 neuve, Mr. Tonnoir, Mr. Pierre and Mr. Collin. 



I should like to express my especial indebtedness to Prof. E. 

 Hindle for much helpful advice and criticism and for many valuable 

 suggestions. I am very much indebtcd to Prof. Dr. Bezzi for bis 

 help in the identification of the members of the family under con- 

 sidération in the présent volume and also for much valuable in- 

 formation My thanks are also due to Mr. T. W. Kirkpatrick of 

 the Cotton Research Board who suggested several improvcmenv.s in 

 the key to the gênera and Prof. Dr. A. Mochi and Mrs. Mochi for 

 much assistance in the literature. 



II. C. E. 



