138 
INSECTIVORil^l. 
Family MO TA CILLIBML 
Genus Motacilla. ( Latham.) 
Generic Characters . — Beak slender, straight, awl-shaped, 
cylindrical, and angnlated between the nostrils; the edge of 
the inferior mandible compressed inwards. Tv^ostrils basal, 
lateral-ovoid, partly closed by a naked membrane. Tarsi as 
long again as the middle toe; three toes in front and one 
behind, the outer toe of the three joined to the middle toe 
at its base; the claw of the hinder toe longer than those in 
front, which are very small. Tail very long and nearly even 
at the end, having twelve feathers. Wings of moderate size, 
first quill the longest, second and third equal, and nearly 
as long as the first. The tertials very long. 
YELLOW-HEADED WAGTAIL. 
Motacilla citreola. 
Motacilla citreola, Pallas; Voy., vol. iii., p. 696, 1776. 
“ “ Gmeltn; Sy.st., p. 962, 1788. 
“ “ Latham; Ind., 1790. 
“ “ Temminck; Man., p. 259, 1820. 
“ “ Keyseeling and Blasilts; Dio 
Wirbelt, 1840. 
“ “ ScHiNZ; Europ. Faun., 1840. 
“ “ Schlegel, 1844. Degland, 1849. 
Mtddendoeff; SIbirische Ileise, 
ii., p. 163. 
Bonaparte, ISSS-. 
Hinlylcs citreola, 
