TRINQA. 155 



b*. Tarsus longer than middle toe and claw, or else toes very slender, without 



distinct lateral membrane. 



c 1 . Exposed culmon not longer than tarsus (or else exceeding it by not 

 more than half the length of the basal phalanx of the middle toe), 

 and less than half as long as the tail. (Subgenus Actodromas 

 KAUP.) 

 <Z\ Wing more than 4.50. 



e\ Kump and median upper tail-coverts plain brownish black or 



dusky. 



f l . Shafts of all the quills white for a portion of their length ; 

 exposed culmen shorter than tarsus. Summer adult : 

 Top of head bright rusty, streaked with black ; scap- 

 ulars and interscapulars rusty, tipped with pale gray- 

 ish brown and white, and broadly striped with black ; 

 superciliary stripe, malar region, chin, and throat, 

 white, streaked and flecked with dusky ; fore-neck and 

 chest buff broadly streaked and spotted with dusky ; 

 rest of lower parts white, with Y-shaped marks of 

 grayish brown, except on belly. Winter plumage: 

 Above grayish brown (more rusty on top of head), 

 streaked and striped with dusky; superciliary stripe 

 and lower parts dull white ; chest and sides of breast 

 pale grayish buff, the former indistinctly streaked with 

 dusky, lower tail-coverts with dusky shaft-streaks. 

 Young : "Whole top of head bright rusty, sharply 

 streaked with black; scapulars, etc., bright ochraceous- 

 rusty, striped with blackish and bordered terminally 

 with white; superciliary stripe, malar region, chin, 

 throat, belly, and lower tail-coverts white, the first 

 two finely streaked with dusky, the last* with dusky 

 shaft-streaks. Length about 7.50-9.00, wing 4.90- 

 5.50, culmen .95-1.05, tarsus 1.10-1.25. Hob. Western 

 coasts and islands of Pacific Ocean, from Australia to 

 Kamtschatka and Alaska (numerous and probably 



breeding) 238. T. acuminata (HORSF.). 



Sharp-tailed Sandpiper. 



/*. Shaft of outer quill, only, white ; exposed culmen longer 

 than tarsus. Summer adult : Above light clay-color or 

 brownish buff, broadly striped with black ; fore-neck 

 and chest light buffy grayish, broadly streaked with 

 dusky; chin, upper part of throat, and lower parts 

 from breast backward, plain white. Winter plumage : 

 Similar to summer dress, but upper parts more uni- 

 form, with blackish markings less distinct, the lighter 

 tints less rusty or buffy. Young : Much like summer 



