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PREFACE. 



THIS the second volume of the " Butterflies " in the Fauna 

 of British India series gives an account of the families 

 Papilionidae and Pieridae, and of five out of the seven sub- 

 families of the Lycsenidse. Of the Papilionidae the bulk of 

 the forms come under the genus Papilio, in the arrangement 

 of which into groups I have followed the Honorable W. 

 Rothschild's paper, "A Revision of the Papilios of the 

 Eastern Hemisphere excluding Africa " (Novitates Zoolo- 

 gies, vol. ii, 1895, pp. 165-463). 



For the Pieridse I have found the late Mr. de Niceville's 

 MS. of his unfinished and unpublished volume of the 

 'Butterflies of India' most useful. This MS., as already 

 acknowledged in my Volume I, was kindly placed at my 

 disposal by the authorities of the Indian Museum. With 

 regard to the very large number of forms contained in the 

 Lycsenidse, I have found it possible to divide them provision- 

 ally into subfamilies on the structural characters of the 

 imago or perfect insect. These subfamilies correspond to a 

 certain extent with the divisions proposed by the late 

 Mr. Doherty ('Journal of the Asiatic Society of Bengal/ 

 vol. Iv, pt. 2, 1886, p. 110), which were founded on the 



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