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Moutli niul teeth of hr.rmlcss snakes. 

 Tiijas mucosus ; g«ape of the jaws. 



„ superficial dissection of the jaws ; the dotted ptirts are 



salivary j?lands. 

 ,, deep dissection. 



., ., „ showing pahue and })terygoid regions. 



Fig. o. Passer Ita myderizans. , 



Fig. 6. Simotes hicatcnaUts. 

 Fig. 7. Lycodoii anUcus ; superficial dissection. > 



Fig. 1. 

 Fig. 2. 



Fig. 3. 

 Fig. 4. 



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