239 



A CATALOGUE OF THE HETEROCERA OF SIKHIM AND 



BHUTAN. 



By G. C. Dudgeon, f.e.s. 



With Notes by H. J. Elwes, f.z.s., f.e.s., &c, 



and 



Additions By Sik Geoege F. Hampson, Bart., b.a., f.e.s., &c., 

 {With a Map.) 

 [Read before the Bombay Natural History Society on 15th July, 1897). 



The production of Sir George Hampson's work on the ''Moths of 

 India " in the " Fauna of British India •' (Blanford), has now rendered 

 it possible for entomologists who have not access to the types or 

 original literature on the subject, to identify and systematically arrange 

 all the hitherto known species belonging to the more important groups 

 of Indian Heterocera. Without the help of the foregoing valuable 

 work, I could not have attempted to compile the present catalogue, 

 which comprises all those species which have been found within the 

 limits of the Sikhim-Bhutan Himalayas, as defined hereafter. This 

 district, although a small one, is so rich in species that, as far as is at 

 present known, it probably heads the list among Indian localities. 

 The idea of the formation of a catalogue of the Heterocera of Sikhim 

 has for years been entertained by Mr. H. J. Elwes to follow his paper 

 on the Rhopalocera of the same district, read in 1888, before the Ento- 

 mological Society of London, and I must here tender my thanks to 

 him for his kind offer to add his notes on the habits, &c, of those 

 species with which he is personally acquainted. I have also to 

 acknowledge the kindness of Sir George Hampson in consenting to 

 correct and add to my manuscript ; also for many valuable hints as to 

 the formation of the same. 



Sikhim. — As geographically understood, this represents the territory 

 bounded on the north by Thibet, on the south by the Darjeeling dis- 

 trict, on the east by Thibet (the Amo Chu or Chumbi Valley) and 

 Independent Bhutan, and on the west by Nepal. For purposes of 

 convenience, however, and with reference to climatic effects, I 

 prefer to include under the name the whole territory which, im- 

 mediately previous to 1835, constituted the State of Sikhim. This, 

 besides the country already defined, included the whole of the 



