210 ITRDIDiE, 



p. 26 (1854) ; Sduter, P. Z. S. 1859, p. 829 ; Sclater, Cat. Atner. 

 B. p. 4 (1862) ; Euler, Journ. Orn. 18G7, pp. 189, 192, 198 ; Scl. 

 S,- ,Sah\ Ex. Orn. p. 141, pi. Ixxi, (1^68) ; Grm/, Hand-l. B. i. 

 p. 257. no. 3750 (18G9) ; Pelz. Orn. Bras. pp. 93, 421 (1871) ; 

 Scl. ^- Salv. Xomencl. Av. Neotr. p. 1 (1873) ; Berkpsch, Journ. 

 Orn. 1873, p. 229 ; Cah. Journ. Orn. 1874, p. 82. 



lu the aduU male the general colour of the upper parts is dark 

 russet-brown, shading into dark olive-brown on the head, and into 

 grej'ish brown on the longest upper tail- coverts ; lores and the sides 

 of the head dark olive-brown ; no trace of eye-stripe ; wings brown ; 

 wing-coverts, innermost secondaries, and outside webs of quills dark 

 russet-brown ; tail brown. Chin and upper throat white, with very 

 conspicuous, clearh- defined, longitudinal dark-brown stripes ; lower 

 throat white ; breast pale brown, shading into rufous brown on the 

 sides of the neck, into chestnut-hrown on the fanhs, and into whito 

 on the belly and under tail-coverts ; thighs brown ; axillaries and 

 under wing-coverts bright chestnut, sometimes greyish ; inner margin 

 of quills pale chestnut-brown, sometimes pale brown. Bill dark 

 brown above, pale yellow below, darker towards the tip. Wing with 

 the third, fourth, and fifth primaries nearly equal and longest; 

 second primary between the sisth and seventh ; bastard primary 

 1*0 to 0'8.5 inch. Legs, feet and claws brown. Length of wing 

 4-65 to 4-35 inches, taU 3-85 to 3-65, eulmen 0-88 to 0-83, tarsus 

 1-22 to 1-15. 



It is not known that the female differs from the male. Birds of 

 the year and young in first plumage appear to be unknown. 



Vieillot's AVhite-throated Thrush has hitherto only been found in 

 East BrazU, from Bahia in the north, southwards in the neighbour- 

 hood of E,io Janeiro, and still further south at Santa Catherina. 



a. Ad. st. South America. 



b. Ad. sk. Brazil. Pm-chased. 



Turdus crotopezus, Turdus tristis, and Tardus leucauchen. 



This Thnish has three forms, which apparently interbreed, as every 

 possible intermediate stage of plumage between them is found. 



The synonymy of the South-American form is as follows : — 



21. Turdus crotopezus. 



Tardus crotopezus, Licht. Verz. Douhl. p. 38 (182.3) ; Ma.x. Beitr. 



iii. p. 646 ri831) ; Gray, Gen. B. i. p. 219 (1847) ; Bp. Consp. i. 



p. 272 (18.50) ; Cab. Mus. Hein. i. p. 4 (18.50) ; Licht. Nom. Av. 



Mus. Zool. Berol. p. 26 (1854) ; Sclater, P. Z. S. 1859, p. 327 ; 



Sclater, Cat. Amer. B. p. 3 (1862) ; Euler, Journ. Orn. 1867, 



p. 404 ; Scl. 8; Salv. Ex. Orn. p. 145, pi. Ixxiii. (1869) ; Oray, 



Hund-l. B. i. p. 257. no. 3752 (18G9) : Scl. ^- Salv. Nomencl. Av. 



Neotr. p. 1 (1873) ; Tacz. P. Z. S. 1874, p. 503. 

 Turdus albicollis, Vieill., ajnid Spi.v, Av. Bras. i. p. 71, pi. Ixx. (1824). 



In the adult nude the general colour of the upper parts is russet- 

 brown, slightly darker on the head, shading into slate-grey on the 



