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THE SNAKES OF SOUTH AFRICA. 



Fig. 93. — I. Pufi Adder braced up and on the defensive ready for a forward thrust. 



2. The first movement in the act of strildng. The head and anterior part of the body is thrown 



backward with lightning rapidity. 



3. Then with gaping jaws the snake makes a rapid forward stroke. 



4. If he does not succeed in driving his fangs home in the object aimed at, he falls the whole length 



of his body, as seen in this picture. 



