﻿Smithsonian 
  Report, 
  1943. 
  — 
  Cochran 
  

  

  Plate 
  19 
  

  

  1. 
  Alligator-snapper 
  (Macrochelys 
  temminckii) 
  . 
  Color: 
  light 
  brown 
  or 
  yellowish. 
  Shell 
  length: 
  about 
  28 
  

   inches. 
  Range: 
  from 
  Texas 
  to 
  southern 
  Georgia 
  and 
  northwestern 
  Florida, 
  as 
  far 
  south 
  as 
  the 
  Suwanee 
  

   River 
  drainage 
  system, 
  north 
  in 
  the 
  Mississippi 
  basin 
  to 
  central 
  Illinois. 
  Shy 
  and 
  retiring 
  in 
  the 
  wild 
  

   state, 
  but 
  able 
  to 
  bite 
  viciously 
  when 
  disturbed. 
  (Courtesy 
  Philadelphia 
  Zoological 
  Society.) 
  

  

  2. 
  Common 
  snapping 
  turtle 
  (Chelydra 
  serpentina 
  serpentina) 
  . 
  Color: 
  upper 
  shell 
  dull 
  olive 
  or 
  dark 
  brown; 
  

   lower 
  shell 
  yellowish 
  ; 
  head 
  and 
  limbs 
  very 
  dark 
  above, 
  light 
  beneath 
  . 
  Shell 
  length 
  : 
  about 
  14 
  inches. 
  Range 
  : 
  

   eastern 
  North 
  America 
  from 
  southern 
  Canada 
  to 
  the 
  Gulf 
  of 
  Mexico, 
  except 
  peninsular 
  Florida, 
  where 
  it 
  

   is 
  replaced 
  by 
  a 
  related 
  subspecies. 
  Able 
  to 
  inflict 
  a 
  severe 
  bite 
  with 
  its 
  sharp-edged 
  jaws. 
  (Courtesy 
  

   A. 
  I. 
  Ortenburger.) 
  

  

  