﻿Smithsonian 
  Report, 
  1943. 
  Cochran 
  

  

  PLATE 
  1 
  1 
  

  

  1. 
  Xight 
  adder 
  {Causua 
  rhombeatus), 
  also 
  called 
  Cape 
  viper. 
  Color: 
  gray, 
  with 
  a 
  chain 
  of 
  dark, 
  light- 
  

   edged 
  spots 
  along 
  the 
  back. 
  Length: 
  3 
  feet. 
  Range: 
  the 
  greater 
  part 
  of 
  South 
  Africa 
  to 
  the 
  Nile. 
  Extremely 
  

   poisonous; 
  aggressive 
  when 
  disturbed. 
  (Courtesy 
  New 
  York 
  Zoological 
  Society.) 
  

  

  2. 
  Pun* 
  adder 
  (Bift'a 
  arietans). 
  Color: 
  a 
  series 
  of 
  black 
  chevrons 
  separated 
  by 
  yellow 
  crescents 
  down 
  the 
  

   back. 
  Length: 
  5 
  feet. 
  Range: 
  southern 
  Morocco 
  and 
  the 
  southern 
  Sahara 
  to 
  the 
  Cape 
  of 
  Good 
  Hope, 
  also 
  

   Arabia. 
  Extremely 
  poisonous; 
  hisses 
  loudly 
  when 
  disturbed. 
  (Courtesy 
  New 
  York 
  Zoological 
  Society.) 
  

  

  