706 EEPORT OF STATE GEOLOGIST. 



collectors have my thanks. Mr. E. W. Nelson reports two occurrences 

 near Chicago, one August 8, 1873, the other, September 10, 1873. 

 (Birds K E. 111., p. 126.) Mr. J. G. Parker, Jr., collected a bright 

 female, from a flock of four at Mud Lake, July 25, 1893, and a young 

 bird August 7, 1893. Mr. F. M. Woodruff reports it from Cook 

 County, 111., near the Indiana line, April, 1890; July 25, 1893, and 

 September 23, 1893 (The Auk, April, 1896, p. 180), and Mr. J. G. 

 Parker, Jr., adds from the same vicinity the record of a young bird 

 August 7, 1893. In Ontario, Mr. Mcllwraith has noted it June 25, 

 July 28, and September 23 and 26. Since it breeds far to the north- 

 ward, there seem to be individuals wandering about, every month from 

 June to October, some of which, perhaps, do not go to the breeding 

 grounds. 



49. GENUS THING A LINN^US. 



a 1 . Wing 6.00, or more ; middle pair of tail feathers not longer than the rest. Sub- 

 genus TRINGA. T. canutus Linn. 93 



a 2 . Wing under 6.00; middle pair of tail feathers longer and more pointed than 

 the rest. 



6 1 . Tarsus about equal in length to bill. 



c 1 . Wing more than 400. Subgenus ACTODROMAS Kaup. 



d 1 . Wing 5.00, or more; rump and middle upper tail coverts plain black or 

 dusky. T. maculata Vieill. 94 



d 2 . Wing less than 5.00; middle upper tail coverts plain dusky. 



T. bairdii (Cones). 95 

 c 2 . Wing under 4.00; size very small. T. minutilla Vieill. 96 



6 2 . Bill very long, nearly as long as tarsus and middle toe; decidedly curved 

 downward at the end. Subgenus PELIDXA Cuvier. 



P. alpina pacifica (Coues). 97 



Subgenus TRINGA. 



93, (234). Tringa canutus LINN. 



Knot. 



Adult in Summer. Above, brownish-black, each feather tipped 

 with ashy-white, and tinged with reddish on scapulars; below, uni- 

 form brownish-red, much as in the robin, fading into white on the 

 flanks and crissum; upper tail coverts, white with dusky bars, tail 

 feathers and secondaries, grayish-ash with white edges; quills, black- 

 ish; gray on the inner webs and with white shafts; bill and feet, 

 blackish. 



Immature. Above, clear ash, with numerous black and white semi- 

 circles; below, white, more or less tinged with reddish, dusky speckled 

 on breast, wavy barred on sides. 



Length, 10.00-11.00; wing, 6.50; tail, 2.50; tail, nearly square. 



