152 SNIPES, SANDPIPERS, ETC. 



II. Bill under 2-00. 

 A. Tail with cross-bare. 



a. Wing over 5-75. 



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

 out bars . . .... 255. Yellow-legs. 



a^. Outer primary with numerous black bars. 



201. Bartkamian Sandpiper. 



b. Wing under 5-75. 



bK Under parts white, with numerous round blackish spots ; upper parts 

 brownish gray, barred with blackish . . 2G3. Spotted Sandpiper. 



i'. Under parts white, breast streaked with blaeki.sh ; upper parts fus- 

 cous, .spotted with white 2o(i. Solitary Sandpiper. 



4'. Dnder 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 Sandpipee (Im.). 

 if. Tail without cross-bars, toes 4. 



a. Bill over 1-10. 



a'. Middle upper tail-covei"ts with cross-bars or streaks. 



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



a*. Tarsus under I'nO, wing under 6'00 . . 244. Curlew Sabdpiper. 

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



A'. Middle upper tail-coverts black or fuscous, without bars; bill 

 straight. 

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

 with gray .... . . . 235. Purple Sandpiper. 



b'. Tarsus under 1-50 ; upper parts more or less margined with rufous. 



239. Peotoeal Sandpiper. 



b'. Taraus over 1-50 260. Ruff. 



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



243a. Eed-baoked Sandpiper. 



b. Bill under. 1-10. 



Ai. Wing under 4-00. 

 4'. Toes partly webbed. 



246. Semipalmated Sandpiper. 247. Western Sandpiper. 



b'. Toes not webbed 242. Least Sandpiper. 



(!■. Wing over 4'00, inner webs of primaries plain. 

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

 dle upper tail-coverts white . . 240. White-rximped Sandpiper. 

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

 upper tail-coverts black, slightly margined with rufous. 



239. Pectoral Sandpiper. 

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

 tail-coverts fuscous, lightly margined with buffy. 



241. Baied's Sandpiper. 

 df. Wing over 4'CO, inner webs of primaries speckled. ■ 



262. Buff-breasted Sandpiper. 

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



