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Figs. 1 & 2. Skull of Ttyas mticosv^, 

 (Coluhridce) , harmless. 



1 (Right fig.) Skull from above, 

 (Left fig.) „ below. 



2 Skull from the side ; views of a vei-tebra. 



Fig. 3. Skull of Bungarus fasdatus, ( ElapidceJ, venomous. 

 Fig. 4. „ Naf)a Tripudians, (Elapid(E),\ejioinous. 



Fig. 5. „ Eahoitx elegans, (ViperidwJ, venomous. 





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