SNIPES, SANDPIPERS 153 



a'. Bill under 4.25. Hudsonian Curlew, 

 a*. Bill over 4.25. Long-billed Curlew. 

 §§, Bill not curved downward. 

 ?. Bill over 2.75. 

 a'. Axillars black, not barred; bill under 3.47; wing usually 



under 8.50. Hudsonian Godwit. 

 a*. Axillars either barred with black or rufous colored not 

 barred; bill over 3.47; wing usually over 8.50. Marbled 

 Godwit. 

 ??. Bill under 2.75. 



a'. Axillars black, not barred. Willet. 

 a*. Axillars barred with black. Greater Yellow-legs. 

 2. Wing under 7.50. 

 §. Bill 2.00 or more. 

 ?. Axillars not barred. American Woodcock, 

 ??. Axillars barred with black. 



a'. Bill both widened and pitted at tip. 

 b'. Length under 11.00; under parts barred with rufous; 



size averaging smaller. Dowitcher. 

 b*. Length over 11.00; under parts more uniform rufous; 

 size averaging larger. Long-billed Dowitcher. (Hypo- 

 thetical List.) 

 a*. Bill not widened or pitted at tip. Wilson's Snipe. 

 §§. Bill under 2.00. 

 ?. Wing over 5.75. 

 a'. Tail with cross bars, 

 b'. Outer primary not barred. Yellow-legs. 



(The Ruff might key in about here, see description.) 

 b*. Outer primary barred with black. Bartramian Sand- 

 piper, 

 a*. Tail without cross bars, 

 b'. Middle upper tail coverts with cross bars or streaks; 



tarsus under 1.50. Knot, 

 b'. Middle upper tail coverts not barred ; tarsus over 1.50. 

 Ruff. 

 ??. Wing under 5.75. 



a'. Tail with cross bars, 

 b'. Wing under 4.75. Spotted Sandpiper, 

 b'. Wing over 4.75. 



c\ Bill under 1.00; under parts tinged with buffy. Bufif- 



breasted Sandpiper, 

 c*. Bill over 1.00 ; under parts white, breast streaked with 

 blackish. Solitary Sandpiper, 

 a*. Tail without cross bars, 

 b'. Bill over 1.05. 



