533 MOTACILLID-E. 



/". Rump mottled witli black centres like 

 the rest of the upper surface. 

 i'". Dorsal leathers broadly ed^^ed with 

 sandy rufous like the head, but without 

 any broad white streaks down the 

 mantle. 

 m*. Median wing-coverts tipped with 

 whitish, forming a more or less 

 distinct wing-bar. 

 g^. Larger ; wing 3o inches : flanks 

 thickly spotted with black like 



the breast cerviniis juv., p. 587. 



h^. Smaller ; wing 2'35 inches : flanks 

 uniform or with narrow lines of 



brown rufus, p. 606. 



n*. Median wing-coverts rufous at the 

 ends like the rest of the coverts and 

 feathers of the upper sm-face ; flanks 

 sandy rufous streaked with dark 



brown chii, p. 608. 



h'". Dorsal feathers with broad inner edges 

 of white, causing a broad streaked 

 appearance on the mantle. 

 o*. Light pattern on tail smoky grey ; 



wing 2-4-2'55 inches peruvianns, p. 609. 



p*. Light pattern on tad. white. 



i'. Wing-coverts edged with sandy 

 bufl', not forming a distinct wing- 

 bar; chest spotted with triangular 



black marks coirendera, p. 610. 



k^. Median and greater wing-coverts 

 tipped with white, forming a con- 

 spicuous double wing-bar ; chest 



streaked with black gustavi, p. 613. 



d'. 2nd, 3rd, 4th, and 5th primaries distinctly 

 emarginate. 

 g" . Light pattern of outer tail-feather white ; 

 under surface white. 

 V". Outer tail-feather white, without any , , ,. „~.^ 



brown on the outer web \ j^ y 



rti . Outer tau-ieather white, with an ob- ^ r filR 



lique black mark on the inner web LP- 



and a line of pale brown along the 

 outer web for albout half of its length 



from the tip furcatus, p. 605. 



h". Light pattern of outer tail-feather smoky 



brown ; under surface of body rufescent. 



w'". Streaks on breast small ; thighs fulves- 



ceiit like abdomen bogoiensis, p. 603. 



o"'. Streaks on bi east broad; thighs conspi- 

 cuously tawny rufous, contrasting with 

 the abdomen antarcticus, p. 604. 



B. Quills and tail for the most part golden yellow ienellus, p. 618. 



