﻿Smithsonian 
  Report. 
  I 
  W. 
  Cochi 
  

  

  Plate 
  12 
  

  

  It' 
  - 
  - 
  •■% 
  > 
  X 
  fc»* 
  " 
  

  

  1. 
  Rhinoceros 
  viper 
  {Bit 
  is 
  nasicornii), 
  also 
  called 
  river 
  jack. 
  Color: 
  a 
  row 
  of 
  large 
  blue 
  oblong 
  marks 
  down 
  

   the 
  back, 
  with 
  a 
  yellow 
  line 
  in 
  the 
  center 
  and 
  black 
  borders; 
  a 
  series 
  of 
  dark 
  crimson 
  triangles 
  bordered 
  

   with 
  blue 
  on 
  the 
  sides; 
  top 
  of 
  head 
  blue 
  with 
  a 
  black 
  arrow-shaped 
  mark 
  pointing 
  forward. 
  Length: 
  4 
  feet. 
  

   Range: 
  tropical 
  West 
  Africa. 
  Extremely 
  poisonous, 
  but 
  not 
  aggressive. 
  (Courtesy 
  New 
  York 
  Zoological 
  

   Society.) 
  

  

  2. 
  Gaboon 
  viper 
  (Bitis 
  gabonica). 
  Color: 
  a 
  series 
  of 
  oblong 
  huff 
  marks 
  enclosed 
  in 
  brown 
  ovals 
  along 
  the 
  

   back, 
  with 
  a 
  chain 
  of 
  purplish 
  marks 
  outside 
  of 
  these; 
  sides 
  with 
  triangular 
  purplish 
  blotches; 
  eyes 
  silvery. 
  

   Length: 
  nearly 
  6 
  feet. 
  Range: 
  forests 
  of 
  West 
  Africa, 
  also 
  Uganda, 
  Tanganyika, 
  Xort 
  hern 
  Rhodesia, 
  Angola, 
  

   and 
  the 
  island 
  of 
  Zanzibar. 
  Extremely 
  poisonous. 
  (Courtesy 
  New 
  York 
  Zoological 
  Society.) 
  

  

  