MOT AC ILL A 201 



lesser wing-coverts clear grey ; wings black margined with white ; two 

 outer tail-feathers nearly white, the rest black. Bill and legs black ; iris 

 brown. Culmen 0'55, wing 3 55, tail 3'65, tarsus 0'9 inch. The female 

 is rather greyer than the male and in winter dress the black on the breast 

 is reduced to a crescentic patch. This species differs from M. lugubris in 

 having the back clear grey, not black in summer, and much paler grey in 

 winter, and in immature dress the upper parts are much greyer. 



Hal. Europe generally, as far north as Iceland ; N. Asia, 

 wintering in the plains of India as far south as Belgaum, and 

 in Burma as Moulmein ; and also in Northern Africa as far 

 south as Senegambia. 



In general habits it does not differ from M. lugubris, and its 

 nest and eggs closely resemble those of that species, with 

 which, indeed, it is said to interbreed. It is a regular migrant 

 to Great Britain, but M. lugubris is the common British species, 

 and not M. alia. 



299. SUBSP. MOTACILLA BAICALENSIS. 



Motacilla baicalensis, Swinhoe, P.Z.S. 1871, p. 363 ; Sharpe, Cat. B. Br. 

 Mus. x. p. 470. 



ad. (Lake Baikal). Differs from M. alia merely in having the 

 white on the crown extending rather further back, and more white on the 

 shoulders, that on the middle and larger wing-coverts almost entirely 

 hiding the black at the base. Culmen 0'52, wing 3'5, tail 3'7, tarsus 0'95 

 inch. 



Hal. Eastern Siberia, wintering in China. 



This species is merely an eastern form of M. alia, from which 

 it does not differ in general habits or nidification. It breeds in 

 the southern Baikal district and in Dauria. 



300. MASKED WAGTAIL. 

 MOTACILLA PERSONATA. 



Motacilla perso?iata, Gould, ~B. of Asia, iv. pi. 63 (1861); Sharpe, Cat. 

 B. Br. Mus. x. p. 479, pt. v. figs. 3, 4 ; Dresser, ix. p. 143, pi. 663 ; 

 Gates, F. Brit. Ind. Birds, ii. p. 290 ; M. personata var. persica, 

 Blarif. E. Pers. ii. p. 232 ; Sharpe, torn. cit. p. 479. 



Tresogushka, Russ. ; Kok-sunduk, Turki ; Dhdbin, Hindu. 



ad. (Central Asia). Differs from M. alba in having the black on 

 the head and neck much further extended, the secondaries and wing- 

 coverts more broadly margined with white, the black on the head con- 



