riATE 11. 



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Mouth 1111(1 tootli of linrmlcss snakes, 

 i'ig. 1. I'tjtas iiiitcosiii-- ; gape of tlie jaws. 

 Fig. 2. „ ,, superficial dissection of tbe jaws ; the dotted jwrts are 



salivary glands. 

 Fig. •'-!. ,, „ deep dissection. 



I'ig. 4. „ „ „ „ showing i)itlatc and pterygoid regions. 



Fig. 5. PasserUa mydcrhans. 

 Fig. G. Simotes hlcatenaius. 

 Fig. 7 ' ' ■" • "•'-■• ■•on. 



