XVI 



ILLUSTRATIONS. 



20. SMOOTH NEWTS 



21. TAIL OF MALE ADDER (3 INCHES) 



22. TAIL OF FEMALE ADDER (2^ INCHES) 



23. HEAD PLATES OF ADDER . 



24. ADDER (26i INCHES) 



25. GULLET OF ADDER, DISTENDED TO SHOW CAPACITY 



26. INTERNAL ORGANS OF ADDER 



27. HEART AND LIVER OF ADDER 



28. DISSECTION OF THE HEART, LUNG, AND LIVER . 



29. TOUNG MALE ADDER AFTER SLOUGHING IN SPRING (19 



INCHES) ..... 



30. OLD FEMALE ADDER (26^ INCHES) 



31. ADDER IN MOTION .... 



32. FEMALE ADDER IN YOUNG (OVIDUCTS FULL OF EMBRYOS 



33. DISSECTION OF OVIDUCTS OF ADDER 



34. EGGS OF ADDER ..... 



35. EGGS OF ADDER (LATER STAGE) . 



36. EMBRYO IN EGG ..... 



37. EMBRYO ADDERS ..... 



38. FEMALE ADDER (25^ INCHES) 



39. EMBRYO ADDERS (mALE) .... 



40. TEN EMBRYO ADDERS AT FULL TIME 



41. FOUR MONNOW VALLEY ADDERS . 



42. SMALL RED VIPER ..... 



43. "BRUSHER MILLS," THE FAMOUS SNAKE-CATCHER 



44. RING SNAKE IN A STONE .... 



45. FEMALE (26^ INCHES) AND MALE (24^ INCHES) ADDERS 



MONMOUTHSHIRE . . . . , 



46. RING SNAKE 



47. MALE ADDER (24 INCHES), EWYAS HAROLD, HEREFORD 



SHIRE ....... 



48. FEMALE ADDER (26| INCHES), HEREFORDSHIRE . 



49. MALE AND FEMALE ADDERS, CENARTH, SOUTH WALES 



