220 BIRDS OF INDIA. 



Northern Asia. Mr. Blyth remarks that these three species of true 

 Wagtail differ from the European species, in all having more white 

 on the wing-coverts and tertiaries, and in the neck being black all 

 round when in summer dress. 



Besides M. bigubris of Europe and Northern Asia already alluded 

 to, the only other true Wagtails recorded, are four from Africa ; 

 one (M. longicauda, figured by Rttppell,) being remarkable for 

 its particularly long tail. 



2nd. — Wood Wagtails. 



Gen. Calobates, Kaup. 



Syn. — Pallenura, Bonap. 



Char. — Bill more slender than in Motacilla; wing slightly shorter, 

 and tertials less elongated; tarsus shorter, and pale colored; 

 hind toe short, with the claw a little longer and moderately curved; 

 otherwise as in Motacilla. 



This form chiefly differs in the more slender form, pale feet and 

 legs, and in its mode of coloration, by which it forms a link to the 

 next group. 



592. Calobates sulphurea, Bechstein. 



Motacilla, apud Bechst.— Blyth, Cat. 771— Horsf., Cat. 555 

 — M. boarula, Temm.— Jerdon, Cat. 137— Gould, Birds of 

 Europe pi. 147— M. bistrigata, IlAFFLKS — Mudi-tippudu-jitta, Tel. 

 The Grey and Yellow Wagtail. 



Descr.— Plumage above pale grey, with a wash of olivaceous ; 

 upper tail-coverts pale yellow, also the edges of the tertiaries ; 

 supercilium, chin, and throat, white; rest of the lower parts pale 

 yellow, greenish on the middle, and laterally pure yellow ; under 

 tail-coverts darker yellow ; a white wing-band; wings and tail 

 brownish black, the three outer tail-feathers on each side, white on 

 the inner web, the outermost wholly so. 



In summer the chin and throat become black with a whitish 

 border, and the yellow of the lower parts is darker. 



Bill black ; legs pale brown ; hides brown. Length 7 A inches ; 

 wing 2% ; tail 3£ ; bill at front J- 6 ; tarsus T %. 



This pretty and delicate Wagtail is widely diffused, inhabiting 

 all Europe, Asia as far as Australia, and Africa. It is migratuiy 



