53. MiMcs. 345 



8. Mimus thenca. 



Tardus thenca, Mvlina, Sar/r/io St. Chil. p. 213 (1810). 



Turdus thema, Vitill. X. Diet. d'Hid. Xat. xx. p. 297 (1818). 



Tiirdus theuca, Bonn, et VkilL Enc. Meth. ii. p. 678 (1823). 



Orpheus thenca, D'Orb. Voy. Amer. merid. p. 209. 



Mimus thenca, Grmj in Dane. Voy. Beagle, Bird.':, p. 61 (1841 ) ; Fraser, 



P. Z. S. 1843, p. Ill ; Cab. 3Ius. Hem. Th. i. p. 83 (1850) ; Sclater, 



P. Z. S. 1859, p. 344 ; id. Cat. Amer. ^. p. 10 (1862) ; id. P. Z. S. 



1SG7, pp. 320, 337 ; Gray, Hand-l. B. i. p. 262, no. 3823 (1869) ; 



Scl gf Salv. Nomencl Av. Neotr. p. 3 (1873) ; Sharpe, P. Z. S. 1881, 



p. 7. 

 Mimus thenka. Gray, Gen. B. i. p. 221 (1847) ; Bp. Consp. i. p. 276 



(1850). 



Adult. General colour above browrn, the head and mantle strongly 

 mottled with darker brown centres to the feathers, imparting also 

 a slightly streaked appearance ; least wing-coverts like the back ; 

 median and greater coverts deep brown, tipped with white, forming 

 a double bar across the wing ; near the edge of the wing a white 

 spot ; bastard wing-feathers and primary-coverts very dark brown, 

 edged with a narrow margin of lighter brown and tipped with 

 white ; quills dark brown, margined with lighter brown, the pri- 

 maries edged and the secondaries tipped Avith white ; tail-feathers 

 dark brown, barred with duskj' under certain lights, edged with 

 ashy whitish, the four outer tail-feathers broadly tipped with white, 

 increasing in extent towards the outermost, which is also white 

 along the outer web ; a broad line of creamy white from the base of 

 the forehead, forming an eyebrow, which widens out above the ear- 

 coverts ; eyehd whitish ; lores dusky blackish ; sides of face dull 

 white, slightly mottled with brown tips to the feathers, the upper 

 margin of the ear-coverts dark brown ; cheeks creamy white ; throat 

 white, separated from the cheeks by a distinct moustachial line of 

 black spots, which are very plain on the sides of the lower throat ; 

 fore neck, breast, and sides of body light isabelliue-brown, the sides 

 streaked with blackish brown, much more broadly on the flanks ; 

 thighs whitish, sUghtly mottled with brown bases to the feathers ; 

 axillaries and under wing-coverts white, the former tinged with 

 isabeUine, all mesially streaked with dark brown ; quUls dusky 

 brown below, light ashy along the edge of the inner web. Total 

 length 10 inches, culmen 1, wing 4-(!, tail O'l, tarsus l'o5. 



A female collected by Dr. Coppinger is like the supposed males ia 

 colour, and measures — Total length 10 inches, culmen 0-9, wing 4-4, 

 tail 4-75, tarsus 1-4. 



The Chilian Mocking- Thrush is confined to Chili west of the 

 Cordillera. 



a, b. Ad. sk. \'alparaiso. Sir W. Burnett and Admiral 



Fitzroy [P.]. 

 c, rf. Ad. sk. Valparaiso. Capt. LoVd Eyi-on [P.]. 



e,f. Ad. st. Valparaiso. Charles Darwin, Esq. [C.]. 



ff. 2 »<!• *li- Coquimbo, July 1879. Dr. Coppinger [P.]. 



