152 SNIPES, SANDPIPERS, ETC. 



II. Bill under 200. 

 A. Tail with cross-bars. 



a. Wing over 5-75. 



ai. Outer tail-feathers white, more or less barred ; outer primary with- 

 out bars 255. Yellow-legs. 



a'. Outer primary with numerous black bars. 



2t)l. Bartramian Sandpiper. 



b. Wing under 5-75. 



b^. Under parts white, with numerous round blackish spots ; upper parts 

 brownish gray, barred witli blackish . . 263. Spotted Sandpiper. 

 b^. Under parts white, breast streaked with blackish ; upper parts fus- 

 cous, spotted with white 25(5. Solitary- Sandpiper. 



b^. Under parts tinged with buffy, inner web of outer primary speckled 



with blackish 262. Buff-breasted Sandpiper. 



b*. Under parts white, breast washed with grayish, inner primaries and 

 secondaries with a concealed white patch. 



263. Spotted Sandpiper (Im,). 

 £. Tail without cross-bars, toes 4. 

 a. Bill over 1-10. 

 a^. Middle upper tail-coverts with cross-bars or streaks. 



a^. Tarsus over 1-50 233. Stilt Sandpiper. 



a3. Tarsus under 1-50, wing under 6-00. . 244. Curlew Sandpiper, 



a*. Tarsus under 1-50, wing over 6-00 234. Knot. 



b^. Middle upper tail-coverts black or fuscous, without bars; bill 

 straight. 

 &2. Tarsus under 1-50 ; upper parts blackish, more or less margined 



with gray 235. Purple Sandpiper. 



J3. Tarsus under 1'50 ; upper parts more or less margined with rufous, 



239. Pectoral Sandpiper, 



b*. Tarsus over 1'50 260. Kuff. 



ci. Middle upper tail-coverts grayish, bill curved slightly downward. 



243a. Eed-backed Sandpiper, 

 d. Bill under 1-10. 

 b^. Wing under 4-00. 

 b"^. Toes partly webbed. 



246. Semipalmated Sandpiper. 247. Western Sandpiper. 



fis. Toes not webbed 242. Least Sandpiper. 



c^. Wing over 4-00, inner webs of primaries plain. 

 c9. Breast white or whitish, streaked or spotted with blackish ; mid- 

 dle upper tail-coverts white , . 240. White-rumped Sandpiper. 

 o3. Breast buffy, heavily spotted or streaked with blackish ; middle 

 upper tail-coverts black, slightly margined with rufous. 



239. Pectoral Sandpiper. 

 c*. Breast buffy lightly spotted or streaked with black ; middle upper 

 tail-coverts fuscous, lightly margined with buffy. 



241. Baird's Sandpiper. 

 d^. Wing over 4-00, inner webs of primaries speckled. 



262. BlFK-BREASTED SANDPIPER. 



C. Tail witliout cross-bars, toes 3 248. Sanderling, 



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