2. TUEDTJS. 211 



longest upper tail- coverts ; lores and ear-coverts dark brown ; no 

 trace of ej-e-stripe ; wings and bastard wing brown ; wing-coverts, 

 the uncmarginatcd portion of the outside webs of the quills, and 

 the outside webs of the innermost secondaries russct-brown ; tail 

 brown. Chin nearlj- white ; the feathers of the cheeks and upper 

 throat white, witli fan-shaped dark-brown terminal spots ; lower 

 throat white ; centre of breast greyish brown, shading into pale 

 russct-brown on the sides of the breast and flanks, and into white 

 on the centre of the belly and under tail-coverts ; axillaries and 

 under wing-coverts buff; inner margin of quills pale brown. Bill 

 dark brown above, under mandible pale at the base. AVing with 

 the fifth primary longest, second primary between the sixth and 

 seventh, bastard primary 1-1 to 0-8 inch. Length of wing 4-7 

 to 4-4 inches, tail 4*0 to 3-4, culmen O'Sl to 0-8G, tarsus 1-3 to 

 1-15. 



The female is not known to differ from the male. Birds of the 

 year and young in first phiniaiie appear to be unknown. 



Lichtenstein's "White-throated Thrush is found on the west coast 

 of Erazil, from Bahia to Eio Janeiro, where it is a resident. It has 

 also been recorded from Central Peru. 



a. Ad. sk. Bahia, Brazil. H. Seebohm, Esq. [P.]. 



The synonymy of the Mexican form is as follows : — 



22. Turdus tristis. 



Merula tristis, Swains. Fhil Mar/. 18^7, p. 369. 



Turdus assimilis, Cab. Mus. Ilein. i. p. 4 (1850) ; Sclater, P. Z. S. 



18o7, p. 202 ; id. P. Z. S. 1859, pp. 327, 362, 370 ; Salvin, Ibis, 



1860, p. 272 ; Sclater, Cat. Amer. B. p. 3 (1802) ; id. P. Z. S. 



lf^04, p. 172; Baird, Bev. Am. B. i. p. 24 (1864); Sumichrast, 



3Iem. Bost. Sac. i. p. 543 (1869) ; Gray, Hand-l. B. i. p. 257. 



no. 3751 (1869). 

 Planesticus tristis (Sivaiiis.), Bp. Compt. Bend, xxxviii. p. 4 (1854). 

 Planesticus assimilis (Cab.), Bp. Cumpt. Bend, sxxviii. p. 4 (1854). 

 Turdus tristis (Swains.), Licht. Novi. A v. Mu.9. Zool. Berol. p. 26 



(1854); Sclater, Cat. Amer. B. p. 4 (1862) ; Scl. ^- Sulv. P. Z. S. 



1870, p. 838: Salvin, P.Z. S. 1870, p. 180; id. Bm, 1872, p. 314; 



Scl. (!j- Sain, ^omencl. Av. Xeotr. p. 1 (1873) ; Salv. ^- Godm. Biol. 



Centr.-Amer. Zool., Aves, i. p. 15 (1879). 



In the achtlt male in autumn plnmarie the head, rump, and upper 

 tail-coverts are olive-brown, sliading into yellowish olive-brown on 

 the back ; lores brown ; ear-coverts olive-brown ; no trace of eye- 

 stripe ; wings brown, the outside webs margined with olive-brown ; 

 wing-coverts and innermost secondaries yellowish olive-brown ; tail 

 brown, the central four feathers margined with olive-brown. Chin 

 and tliroat nearly white, each feather of the upper throat with a 

 fan-shaped black terminal spot ; breast and flanks pale olive-brown, 

 shading into nearly pure white on the centre of the belly : under 

 tail-coverts nearly white, with pale brown margins ; axillaries and 

 under wing-coverts deep buff ; inner margin of quills pale huffish 



p2 



