712 JOURNAL, BOMBA Y NA TURAL HISTORY SOCIETY, Vol. XV III. 



The total number of recognisable species now amounting to twelve, 

 I think a brief review of the different forms is called for before dis- 

 cussing the common Indian form ccemleus with which ibis paper 

 deals. 



The easiest way to approach the subject is I feel by appending a 

 table indicating at a glance the main points made use of in differen- 

 tiation. 



The key which follows is added to still further simplify the process 

 of identification. 



Some brief remarks on each of the species follow. 



