290 THE BIRDS OF MONGOLIA ETC. 



147. Onychospiza taczanowskii, n. sp. (Plate LIV. iii. fig. 1.) 



Supra grisea^ subtus sordide alba ; dorso fusco striato ; fronte^ superciliis uropygioque albis ; loris 

 nigris ; alls fuscis^, remige secundo pogonio toto externo albo_, cseteris albido marginatis et in 

 pogonio interno macula magna alba notatis_, secundariis albo terminatis,, tectricibus albido 

 limbatis ; cauda rotundata^ nigra^ rectricibus latissime albo terminatis_, mediis vero brunneis 

 et pallide marginatis ; rostro plumbeo^ apice nigricante ; pedibus nigris. 



Measurements : — 



Lengtb. Width. Wing. Tail. Gape, 



in. in. in. in. in. in. in. in. in. in. 



d. 



. 71-7-2 



11-7-12 



4-03-4-1 



2-7-2-88 



0-57-0-59 



?. 



. 6-8-71 



11-7-12 



3-95-415 



2-7-2-78 



0-55-0-6 





Tarsus. 



Middle toe. 



its claw. 



Hind toe. 



its claw. 





in. in. 



in. in. 



in. in. 



in. in. 



in. in. 



d. 



. 0-88-0-94 



0-48-0-51 



0-28-0-36 



0-24-0-28 



0-26-0-28 



2. 



. 0-87-0-92 



0-49-0-51 



0-28-0-36 



0-25-0-28 



0-28-0-31 



Quills — 1st twice as short as its coverts ; 3rd = 4tli longest; 2nd only 

 slightly shorter, but longer than the 5th; sometimes 3rd=4th; Srd, 4th, 

 and 5th quills are somewhat cut-in at the top of the inner web. In 

 the rounded tail the outer feathers are 0'''4 shorter than the central 

 ones. Culmen lead-coloured, tipped with black. The young (?) in autumn 

 have yellowish-green spots on the bill ; tarsus, toes, and claws black ; iris 

 light brown*. 



Male (in autumn). — Forehead, eyebrows, cheeks, sides of the neck, and 

 the underparts generally dirty white ; throat, centre of stomach, and rump 

 pure white. Lores black ; an indistinct line leading from the latter, under 

 the eyes, dark reddish brown ; ear-coverts and hind portion of neck brownish 

 grey. Crow^n and nape light reddish brown. The feathers of the back have 

 dirty-white outer and dark brown inner webs, by which some longitudinal 



■^ [In the original tbere is a woodcut inserted bere^ of the wing^ tail^ beak^ and claw. — Editor 

 OF O. M.] 



