ILLUSTRATIONS. 



THE THREE BRITISH SPECIES 



1. HEADS OF THE THREE BRITISH SERPENTS 



2. TROPIDONOTUS NATlilX, OR RING SNAKE (24* INCHES) 



3. RING SNAKE (3J FEET, CORNWALL) 



4. RING SNAKE WITH BLUNT TAIL . 



5. HEAD PLATES OF RING SNAKE 

 PLAN OF LOCALITY, PLAGUE OF SNAKES . 



6. YOUNG RING SNAKE FOUND IN DEBRIS OF WALL 



7. EGGS FOUND IN OLD WALL . . . 



8. CORONELLA AUSTRIACA, OR SMOOTH SNAKE 



9. HEAD PLATES OF SMOOTH SNAKE 



10. SMOOTH SNAKE ..... 



11. EYE-COVERING OF ADDER. 



12. SLOUGH OF AN ADDER .... 



13. Y-MARKS OF ADDERS .... 



14. SIDE-MARKINGS OF ADDER 



15. BANDED MARKING ON ADDER 



16. SLOW- WORMS ..... 



17. MALE ADDER (24 INCHES) CAUGHT AT SKENFRITH, 



JUNE 1898 ...... 



18. MALE ADDER (25^ INCHES) SWALLOWING A SLOW-WORM 



19. THE PROCESS OF SWALLOWING LARGE ARTICLES OF DIET 



IN ADDERS ...... 



PARE 



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