﻿Additions 
  to 
  North 
  American 
  Ornithology. 
  117 
  

  

  under 
  plumage 
  dull 
  rufous, 
  paler 
  on 
  the 
  abdomen. 
  Length 
  

   23 
  in., 
  wing 
  8 
  inches. 
  

  

  11. 
  Dendrocygna 
  Autumnalis. 
  (Linn.) 
  Eyton. 
  This 
  duck 
  

   is 
  found 
  abundantly 
  in 
  Mexico, 
  where 
  it 
  is 
  also 
  domesticated 
  ; 
  

   it 
  frequents 
  the 
  land 
  more 
  than 
  is 
  usual 
  with 
  its 
  tribe, 
  having 
  

   long 
  and 
  slender 
  legs 
  well 
  adapted 
  for 
  walking. 
  It 
  has 
  been 
  

   found 
  breeding 
  on 
  the 
  Rio 
  Grande. 
  Crown, 
  neck, 
  back 
  and 
  

   breast 
  chesnut, 
  throat 
  greyish 
  white, 
  abdomen, 
  wings, 
  and 
  

   tail 
  black, 
  lesser 
  wing 
  coverts 
  rufous 
  yellow, 
  greater 
  ash 
  

   grey, 
  terminating 
  in 
  white. 
  Length 
  21 
  inches, 
  wing 
  10 
  in., 
  

   tarsus 
  2;^ 
  in. 
  

  

  Additions 
  to 
  North 
  American 
  Ornithology. 
  

   By 
  GrEORGE 
  N. 
  Lawrence. 
  

  

  No. 
  1. 
  

   Thallassidroma 
  fregetta 
  (Sol.) 
  Khul, 
  Monogr. 
  

  

  Do. 
  LEUCOGASTER, 
  GrOULD. 
  

  

  White-bellied 
  Stormy 
  Petrel. 
  

  

  Description. 
  Head 
  and 
  wings 
  black 
  ; 
  neck, 
  breast 
  and 
  

   back 
  dusky 
  bluish-ash 
  or 
  dark 
  plumbeous 
  ; 
  wing 
  coverts 
  

   brown 
  ; 
  tail 
  perfectly 
  even, 
  with 
  the 
  two 
  central 
  feathers 
  

   black, 
  the 
  others 
  white 
  at 
  the 
  base 
  for 
  half 
  their 
  length, 
  ter- 
  

   minating 
  with 
  black 
  ; 
  abdomen, 
  inside 
  covering 
  of 
  wings 
  and 
  

   rump 
  white 
  ; 
  bill 
  and 
  legs 
  black. 
  

  

  The 
  claws 
  are 
  peculiarly 
  shaped, 
  being 
  depressed, 
  ovate, 
  

   and 
  as 
  broad 
  as 
  they 
  are 
  long. 
  

  

  