The Viperine Snakes 



north of Panama, and stating the areas in which they are found. 

 The Mexican and Central American species are listed merely to 

 demonstrate the variety of the New World Pit Vipers. They 

 do not come within the scope of this work and are not considered 

 in the succeeding chapters. Several additional species of Lachesis 

 inhabit South America. 

 The list follows: 



