PLATE III 



Representatives of Some Poisonous Snake Families 



Figure 1. Black Mamba, Dendroaspis polylepis 

 (ELAPIDAE). Plioto by J. Markham. (See 

 p.i>3) 



^-'■^^ 



Figure 2. Westeni Dianiondback Rattlesnaice, 

 Crolai'is atrox (OROTALIDAE), Navy photo, 

 courtesy U.S. National Zoological Park. (See 

 p. 40) 



Figure 3. Prairie RaitloMiake, Crutalux i-. viruiU 

 (CROTALIDAE). Navy photo, courtesy U.S. 

 Natioiifll Zoolt^iciil Park. (See p. 42) 



Figure 4. Timber Rattlesnake, CruUitus horruiun 

 (CROTALIDAE). Navy photo, courtesy U.S. 

 Xatioiiiil Zoologii-nl Park. (See p. 43) 



Figure 5, t'ottnnnioutii, Agkistrodon pisciivrus 

 (CROTALIDAE). Na%'y photo, courtesy U.S. 

 National Zoologk-al Park. (See p. 3'J) 



Figure b. Amencan Copperhead, Aghstroaon 

 conlvrtrij- (CROTALIDAE). Xavy photo, 

 courtesy U.S. National Zoological Park. 

 (Seep. 39) 



207 



