Contents 



CHAPTER PAGE 



and the American Coral Snakes Resume of 

 the Elapince Descriptions of the North Amer- 

 ican Species Their Habits . 392 



XLIII. THE VIPERINE SNAKES; Family Viperida 



The Thick-bodied Poisonous Snakes of the New 

 World Serpents Distinguished by their Long 

 Fangs, which Fold Against the Roof of the 

 Mouth when it is Closed .... 403 



XLIV. THE MOCCASINS; Genus Ancistrodon 



Descriptions of the Species Their Habits . . 414 



XLV. THE RATTLESNAKES 



Poisonous Snakes of Two Genera Sistrurus and 

 Crotalus That are Unique Among Serpents 

 in the Possession of the Rattle . . 426 



INDEX . .... 467 



xx 



