PREFACE. V 



We have thought it advisable that there should be only one authority for new 

 species, on which account each of the authors has attached his name to a moiety of the 

 work ; but it must not be imagined that we have worked otherwise than jointly and 

 continuously throughout. 



The numbers in brackets which follow the specific names are those originally 

 attached to the specimens in Lieut. Colonel Playfair's collection. We have retained 

 them to facilitate the identification of such as have been sent by him to other 

 Museums in Europe and India. 



We desire to record our grateful thanks to the Government of Bombay for the 

 liberal measure of assistance it has accorded to this work by taking 100 copies. This 

 has enabled us to illustrate all the most important species, and for that end to secure 

 the valuable services of Mr. Ford-, whose ability as a zoological artist is too well known 

 to require notice. 



THE AUTHOKS. 



London, November 1866. 



