MOTACILLA CITREOLA. 
(YELLOW-HEADED WAGTAIL.) 
Die Bachstelze mit dem gelben Bauche (Russ. Sheltobrjuschka), Lepech. It. i. p. 187 (1775). 
Motacilla citreola, Pallas, Reise, ii. App. p. 696. no. 14 (1776). 
Motacilla citrinella, Pallas, Zoogr. Rosso-As. i. p. 503 (1811). 
Motacilla aureocapilla, Less. Orn. p. 422 (1831). 
Budytes citreola (Pall.), Bp. Comp. List, p. 19. no, 159 (1838). 
Figure notabiles. 
Werner, Atlas, Insectivores, pl. 81; Naumann, Vog. Deutschl. taf. 377. figs. 2, 4; Gould, 
B. of Eur. pl. 144; Middendorff, Sib. Reise, ii. taf. 14. figs. 4, 5. 
3 ad. ptil. est. capite, collo et eorpore subtus pulchré citrinis, hypochondriis sordidé cinereo-schistaceis, dorso 
uropygio et tectricibus alarum minoribus cinereo-schistaceis, dorso indistincté flavido adumbrato, collo 
imo postico nigro: remigibus nigricantibus, secundariis intimis elongatis albido marginatis: tectricibus 
alarum majoribus et medianis nigricanti-cinereis conspicué albo terminatis: supracaudalibus nigro- 
schistaceis: rectricibus duabus extimis utrinque albis, in pogonii interni dimidio basali nigro margi- 
natis, reliquis nigris: rostro et pedibus nigris, iride fusca. 
2 ad. ptil. est. pileo et nuché non citrinis sed flavicanti-cinereis vix brunneo tinctis: regione superciliari, 
loris et gula citrinis, torque in collo postico nulla: corpore supra ut in mare sed sordidiore: alis, 
cauda et corpore subtis ut in mare picturatis: capitis lateribus et regione parotica cinerescente nigro 
notatis. 
Juv. pileo, nuchaé et corpore supra sordidé cinereis flavicante brunneo lavatis, pileo magis flavido: fronte et 
strié superciliari flavicanti-albidis, regione suboculari et regione parotica sordidé cinereis : corpore subtus 
albido, pallidé flavo lavato, gutture imo flavo adumbrato et vix grisescente fulvido notato: alis et cauda 
ut in adulto picturatis sed sordidioribus. 
3 ptil. hiem. femine similis sed corpore supra saturatiore, fronte flava, strid superciliari majore: pectore et 
corpore imo subtts non citrinis sed flavicanti-albidis: gutture imo vix nigro-fusco notato: secundariis 
et tectricibus alarum sordidé albido, nec albo marginatis et terminatis. 
Adult Male in breeding-dress (Lake Baikal, 18th May). Head, neck, and underparts (except the flanks) 
bright canary-yellow, back, lesser wing-coverts, and rump dark slaty grey, with a faint greenish or 
yellowish tinge on the back; on the lower neck, where the yellow ends is jet-black, a black collar 
being thereby formed round the hind neck; quills dull blackish, the primaries with faint lighter edges, 
elongated inner secondaries black, edged with white, larger and median wing-coverts greyish black, 
broadly tipped with pure white; upper tail-coverts blackish grey; the two outer tail-feathers on each 
side white, the basal half of the inner web margined with black, remaining rectrices jet-black, flanks 
dark slate-grey ; legs and bill black, iris brown. Total length about 5:7 inches, culmen 0°65, wing 3°33, 
tail 3°2, tarsus 1:05, hind toe with claw 0°7. 
