SEIURUS. 519 



of upper pai-ts tipped with light fulvous, producing a spotted appear- 

 ance, and streaks on lower parts much less distinct than in adult. 

 c^. Smaller, browner above, superciliary stripe usually more distinctly 

 fulvous, and lower parts usually distinctly yellowish ; length 5.00- 

 6.00, wing 2.80-3.10 (2.94), tail 2.00-2.25 (2.14), exposed culmen 

 .43-.50 (.47), tarsus .80-.88 (.83). JVest on or near ground in wet 

 woods or on border of swamps, open above. Eggs .75 X -57. Hab. 

 Eastern ^N'orth America, breeding from northern United States 

 northward ; west to Mississippi Valley (but chiefly east of Allegha- 

 nies ?), south, in winter, to Gulf States, West Indies, and northern 

 South America.. 675. S. noveboracensis (Gmel.). Water-Thrush. 

 c''. Larger, darker and sootier above, superciliary stripe less distinctly 

 fulvous, and lower parts much less often distinctly yellowish ; 

 length 5.50-6.50, wing 2.90-3.25 (3.14), tail 2.10-2.50 (2.35), ex- 

 posed culmen .44-.55 (.51), tarsus .82-.90 (.87). Hab. Western 

 North America (chiefly in the interior), north to Alaska, east to 

 Mississippi Valley (as far as western Indiana, Illinois, etc.) ; south, 

 in winter, to Lower California, Mexico, and Central America. 



675a. S. noveboracensis notabilis (Grinn.). 

 Grinnell's Water-Thrush. 

 b'^. Superciliaiy stripe white ; streaks on lower parts not darker than upper 

 surface ; throat usually immaculate ; longer under tail-coverts entirely 

 white or pale buff, or else with only the basal portion of one web brown- 

 ish ; lower parts always more or less tinged with buff laterally and pos- 

 teriorly, but never with sulphur-yellow ; wing exceeding tail by more 

 than length of tarsus. 



Above grayish brown, rather lighter and more olivaceous (or less 

 brownish) than in S. ncevius ; superciliary stripe and lower parts 

 white, the latter changing to buffy posteriorly and laterally; breast, 

 sides, and flanks broadly streaked with the color of the back. Young : 

 Similar to adult, but upper parts browner, wing-coverts tipped with 

 dull rusty, and sti-eaks on lower parts much less distinct (nearly 

 obsolete) on sides and flanks. Length 5.75-6.40, wing 3.00-3.25 

 (3.15), tail 2.10-2.30 (2.15), exposed culmen .50-.56 (.53), tarsus .87- 

 .91 (.89). Nest a bulky structure of dried leaves, fine rootlets, 

 grasses, etc., carefully hidden in crevices among roots of upturned 

 trees, old logs, stumps, or mossy banks — always in moist or swampy 

 woods. Eggs .73 X -59. Hah. Eastern United States, north to the 

 Great Lakes and southern New England, west to Great Plains ; in 

 winter, from Gulf States to West Indies, eastern Mexico, and Central 

 America.... 676. S. motacilla (Vieill.). Louisiana Water-Thrush. 



