MOTACILLID.E MOTACILLA 255 



with the tail longer than the wing and with a long and but slightly 

 curved hind - claw. Four species and subspecies of the latter 

 group are annual visitors to South Africa from Europe and Western 

 Asia. It will be seen from the accompanying illustration that the 

 wing of the migratory M. flava is longer and more pointed than 

 that of the resident M. longicauda, and that the hind claw of the 

 former, a bird that frequents from choice flat and marshy pasture 

 lands, is long and but slightly curved, while that of the latter, a 

 species that habitually runs on wet and slippery stones and rocks, 

 is short and strongly hooked. 



Key to the Species. 



a. Wing longer than the tail ; plumage black, 



brown, or grey and white, without any yellow. 

 a 1 . Entire upper surface black M. vidua, in summer, 



p. 25,5. 



6 1 . Crown and back clear grey M. longicauda, p. 257. 



e 1 . Crown black ; back ash -brown M. vidua, in ivinter, 



p. 255. 

 d l . Crown ash-brown; back brown M. capensis, p. 259. 



b. Wing shorter than the tail ; above, back olive- 



yellow ; lower surface of body yellow. 



e l . Crown yellow or olive-yellow M, campestris, p. 260. 



jr 1 . Crown blue -grey or slate -grey. 



a?. With a white eyebrow ; lower throat 



unmottled M. flava, p. 261. 



6 2 . No eyebrow; lower throat mottled with 



greenish M. flavaborealis, 



p. 263. 



r/ 1 . Crown black. 



c 2 . No eyebrow, lower throat unmottled M. melcmocephala, 



p. 263. 



00 



147. Motacilla vidua. African Pied Wagtail. 



L'Aguimp ou La Lavandiere Pie, Levaill. Ois. d'Afr. iv, p. 82, pi. 178 

 (1805). 



Motacilla vidua, Sundev. (Efvers, Stockholm, 1850, p. 128; Sharpe, 

 ed. Layard's B. S. Afr. pp. 545, 853 (1884) ; id. Cat. B. M. x, 

 p. 488 (1885); Shelley, B. Afr. i, p. 11 (1896). 



Motacilla vaillantii, Bp. Conspect. i, p. 13 (1850) ; Gurney, in Anders- 

 son's B. Damara Land, p, 112 (1872). 



Motacilla aguimp, Layard, B. S. Afr. p. 119 (1867) ; Sharpe, Cat. 

 Afr. B. p. 73 (1871) ; id. in Gates' 's Matabili Land, App. p. 317 

 (1881). 



Motacilla gariepina, Holub and Pelzetn, Orn. Sudafr. p. 85 (1882). 



