712 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. XVIII. 



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 ccervleus with which ihis 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. 



£5 



« 



&wn#aroldes 

 livldus .. 

 coeruleus 



ceylonicus 

 fasciatus 



magnimaculatus, 



multicinctus 



niger 



candidus 



sindanus 

 walli 



42-55 



44-51 



35-42 

 38-50 



33-40 

 23-39 



42-49 

 45-53 



47-57 



40-50 



48-52 

 48-55 



Yes 



No 



Yes 



No, 



Yes 



No 



Yes 



No 

 Yes 



No 



Yes 



None. 



Many equidis- 

 tant white lines. 

 Belly wuite. 

 None. 



Many white 

 lines in pairs. 



15 to 20 2 to 

 bands surround- 

 ing belly. 



16 to 27 2 to 3 

 co i plete yniiow 

 and black bands, 



11 to 14 I 2 to 3 

 Bands noc sur- 

 rounding bell.. 



31 to 45 11 to 13 

 Bands not «ur- 



rounding belly. 



None. 



20 to 25 7 to 9 

 Bands not sur- 

 rounding belly. 

 Many white 

 lines in pairs. 

 Many equidis- 

 tant white bead- 

 ed lines. 



Malay Archipelago 

 and 1'euinsula, 

 cochin China 

 and Tenasseiim. 



HI. Him* 1 a y a s, 

 Khasi Hills, 

 N. C^char. 



The BraMnaputra 

 Basin S uth of 

 the Himalayas. 



Indus and Ganges 

 Basins. Peuinsu- 

 lar India and 

 Ceylon. 



Ceylon. 



Brahmaputra Ba- 

 sin South of the 

 Himalayas, Ma- 

 hanadi Basin, 

 1 rrawaddy-S a 1 - 

 ween Basins. 



I rrawaddy Basin. 



From S. China to 

 the Irrawaddy- 

 Salween B»6lns 

 ;>nd Andnmans. 



Brahmaputra Basin 

 South of the Hi- 

 malayas. 



Malay Peninsula 

 and Archipelago. 



Sind. 



Ganges Basin. 



