PREFACE. 



The uiuth part of the ' Illustrations ' is devoted to the Macrolepidoptera Heteroccra of 

 Ceylon. It is divided into two portions : — 



1. A systematic list of all the species known at present, with enumeration of the 

 localities in Ceylon from which they have been recorded, and with references to the literature 

 supplementary to those given in F. Moore's ' Lepidoptera of Ceylon ' and in Cotes and 

 Swinhoe's ' Catalogue of the Moths of India.' 



2. The descriptive portion, which contains diagnoses of all the species figured. In 

 accordance with the principal object of the work, the figures are restricted to those species of 

 which the types are pi'cserved in the British Museum, and which are described either now 

 for the first time, or were published in previous works, provided that the types have not been 

 already satisfactorily figured elsewhere. If the same plan were methodically carried out in 

 other Museums and Collections containing types of published species, much labour and error 

 would be spared to the student, and much confusion avoided in nomenclature. Many 

 Walkerian species have been re-examined and are figured in the present part. 



The greater portion of the materials for this contribution to the Ceylonese Fauna was 

 obtained from a fine collection formed by Mr. E. E. Green, the whole of '\^hich he ofiered to 

 the British Museum on the condition that the Trustees would publish the descriptious of the 

 new species in a part of the ' Illustrations.' This proposal was agreed to, Mr. Green's 

 Collection being subsequently largely supplemented by a liberal gift of specimens selected 



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