152 SNIPES, SANDPIPERS, BTU. 



II. Bill under 2-00. 

 A. Tail with cross-bars. 



a. Wing over 5-75. 



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

 out bars 255. Yellow-legs. 



a'. Outer primary with numerous black bars. 



261. Baetkamian Sandpiper. 



b. Wing under 5'Y5. 



6'. Under parts white, with numerous round blackish spots ; upper parte 

 brownish gray, barred with blackish . . 263. Spotted Sandpipeb. 

 J». Under parts white, breast streaked with blackish ; upper parte fus- 

 cous, spotted with white 256. Solitakv Sandpiper. 



4'. Under parts tinged with huffy, inner web of outer primary speckled 



with blackish 262. Buff-bbeasted Sandpiper. 



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

 secondaries with a concealed white patch. . 



263. Spotted Sandpipeb (Im.). 

 £. Tail without cross-bars, toes i. 

 a. Bill over 1-10. 

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



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



a'. Tarsus under 1'50, wing under 6'00. . 244. Ccblew Sandpipeb. 



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



4'. Middle upper tail-ooverte black or fuscous, without bars; bill 

 straight. 

 b'. Tarsus under 1'50 ; upper parts blackish, more or less margined 



with gray 235. Purple Sandpiper. 



Js. Tarsus under 1-50 ; upper parts more or less margined with rufouB. 



239. Pectoeal Sandpipeb. 



b*. Tarsus over 1-50 260. Euff. 



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



243a. Eed-baoked Sandpiper. 

 b. Bill under 1-10. 

 *!. Wing under 4-00. 

 b'. Toes partly webbed. 



246. Semipalmated Sandpipeb. 247. Western Sandpipeb. 



6s. Toes not webbed 242. Least Sandpipeb. 



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

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

 dle upper tail-coverte white . . 240. White-bdmped Sandpipeb. 

 c^. 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 

 tall-coverts fuscous, lightly margined with buffy. 



241. Baied's Sandpiper. 

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



262. Buff-beeasted Sandpiper. 

 C Tail without cross-bars, toes 3 248. Sandeblino. 



