51. OEEOSCOPTES. 333 



the feathers in front of and below the ej'e, as well as at the base of 

 the cheeks, whitish ; chin whitish ; remainder of under surface of 

 body yellowish buff, thickly mottled with brown centres to the 

 feathers, generally in the form of large triangular spots ; abdomen 

 white with brown spots, rather smaller than the breast-spots ; 

 flank-feathers with broad dark-brown centres ; thighs uniform 

 yellowish buff ; under tail-coverts paler buff, sparsely spotted with 

 brown on the tips of some of the feathers ; under wing-coverts and 

 axillaries rich golden buff, with a slight central shade of brown on 

 the former ; quills ashy brown below, golden buff along the inner 

 web ; biU horny black ; legs pale ; " iris black " (J. Murray). 

 Total length 8'3 inches, culmen 1-1, wing 3-8, tail 3'1, tarsus l--i. 



The specimens collected during the voyage of the ' Challenger ' 

 do not happen to have the sexes marked ; but there can be no 

 doubt that the femah resembles the male. Young birds appear to 

 have more tawny buff on the wing-coverts, which are distinctly 

 centred as well as tipped with this colour. 



The Hermit Mocking-Thrush is confined to the islands of Tristan 

 and Inaccessible, in the Tristan da Cunha group. 



a. Ad. sk. Tristan da Cimha. J. Macgillivray, Esq. [C.]. 



(Type of species.) 



b, c, d, e. Ad. sk. Tristan da Cunha. Vov. of H.M.S. ' Challenger.' 

 /. Ad. sk. Tristan da Cunha. Voy. of II.M.S. ' Challenger.' 



(Spec. fig. Sclater, t. c.) 



51. OREOSCOPTES. 



Type. 

 Oreoscoptes, Baird, B. N. Amer. p. 347 (1858) O. montanus. 



Bancje. The Rocky Mountains of the United States, west to the 

 Pacific, south to Cape St. Lucas, 



1. Oreoscoptes montanus. 



Orpheus montanus, Towns. Journ. Philad. Acad. 1837, p. 192 ; 



Av/Jub. B. Amer. ii. p. 194, pi. 139. 

 Tiu-dus montanus, Audub. B. Amer. pi. 369. fig. 1 ; id. Orn. Biogr, iv. 



p. 487. 

 Tardus (Orpheus) montanus, Towns. Journ. Philad. Acad. 1839, 



p. 153. 

 Mimus montanus, Bp. Cmnp. List B. Eur. l^ N. Amer. p. 17 (1838) ; 



id. Consp. i. p. 276 (1860) ; Gra)/, Haml-l. B. i. p. 262, no. 3837 



(1869). 

 Oroscoptes montanus, Baird, B. N. Amer. i. p. 347 (1858) ; ScleUer, 



Cat. Amer. B. p. 8 (1862) ; Coues, Pr. Philad. Acad, xviii. p. 65 



(1866). 

 Oreoscoptes montanus, Sclater, P. Z. S. 1859, p. 340 ; Baird, Review 



Amer. B. p. 42 (1864) ; Dresser, Ibis, 1865, p. 482 ; Cooper, Orn. 



Calif, p. l2 (1870); Allen, Bull. Mus. Comp. Zool. iii. p. 174 



(1872) ; Coues, Eet) N. Amer. B. p. 74 (1872) ; Ridqu: Bull. Ess. 



Inst. v. p. 179(1873): Coues, B. X.-Wvst, p. 7 (1874); Baird, 



Brexcer, 8f Ridgxo. Hist. N. Amer. B. i. p. 32 (1874) ; Coues, B. 



