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This bird is practically identical with others from Eastern Ecuador and 
Northern Peru. Compared with a series of true 7. 2. ignobilis Scl. from Bogota 
collections, it fully bears out the distinctive characters as given /.c. See also my 
remarks in Nov. Zool. xiii. 1906, p. 5. 
T. i. debilis ranges from Eastern Ecuador through Northern and Central Pera 
to N.W. Brazil (Rio Parts and Rio Madeira). Occasionally it is also met with in 
Bogota collections (cf. Nov. Zool. xiii. 1906, p. 5). 
3. Turdus amaurochalinus Cab. 
Turdus amaurochalinus Cabanis, Mus, Heinean, i. p. 5 (1850.—“ Brasilien ”’). 
No. 668. ? ad., 8. Isabel, Rio Preto, 10. x. 1907. “Iris brown, feet grey, 
bill. blackish, base of lower mandible yellowish.”’—Wing 110; tail 92; bill 20 mm. 
This bird agrees perfectly with a series from 8.E. Brazil and Corrientes, 
Argentine. It differs from the specimen of T. 7. dedilis obtained at S. Isabel by 
Mr. Hoffmanns by its longer wings and tail, blackish loral spot, pure white chin 
(without any brown striations), much broader and more blackish brown stripes on 
the throat, much paler, buffy brownish instead of plain ashy breast and sides, clear 
ochraceous buff (not greyish brown) under wing-coverts, and by having well-defined, 
bright ochraceous edges to the inner webs of the remiges, altogether absent in 
T. i. debilis. The bill, too, is not uniform blackish, the basal half of the lower 
mandible being clear yellowish brown; there is also a spot of pale brown on the 
culmen near the tip. 
This is, so far as I know, the first record of 7. amaurochalinus from any 
Amazonian locality, though its occurrence on the Rio Madeira is not to be 
wondered at, for it was well known as an inhabitant of Northern Bolivia on the 
headwaters of that river. I expect, moreover, that 7. dbrunneus Lawr.* will also 
prove to belong to 7. amaurochalinus. 
It is highly interesting to meet with 7. amaurochalinus and T, 7. debilis in the 
same locality. There can be no longer any doubt about their specific distinctness. 
4. Turdus hauxwelli Lawr. 
Turdus hauxwelli Lawrence, Ann. Lyc. Nat. Hist. New York, ix. p. 265 (Aug. 1869.—Pebas, N.E. 
Peru) ; Seebohm, Cat. Birds Brit. Mus. v, 1881, p. 217 (Iquitos, Peru) ; Sharpe-Seebohm, 
Monogr. Turd. i, p, 251 (Eastern Peru) ; Hellmayr, Nov. Zool. xiv. 1907. p. 40 (Teffé) ; idem, 
Le, p. 344 (Humaytha, Rio Madeira) ; Snethlage, Journ. f. Ornith. 1908. p. 7 (Cachoeira, Ponto 
Alegre, Rio Puris). 
Merula haucwelli Ihering, Mus. Paulist, vi. 1905. p. 430 (Rio Jurué), 
Turdus fumigatus (nec Licht.) Sclater & Salvin, P, Z, S. Lond, 1866. p. 177 (Nauta, N. Peru) ; 
iidem, /.c. 1873. p. 255 (Nauta, Chamicuros, Santa Cruz, Pebas). 
Merula fumigata hauxwellii Allen, Bull, Amer, Mus. ii, 1889. p. 78 (Reyes, Beni R., North Bolivia). 
No. 708. ¢ad., 8S. Isabel, Rio Preto, 16. x. 1907. “Iris brown, feet dark 
grey, bill green.”—Wing 113; tail 92; bill 18} mm. 
No. 82. Adult (not sexed), Calama, 21. vi. 1907. ‘Iris brown, feet brownish 
grey, bill dark brown.”—Wing 110 ; tail 90; bill 19 mm. 
No. 467. ? juv., Calama, 27. vii. 1907. ‘Iris brown, feet greyish brown, bill 
blackish.” —Wing 107; tail 84; bill 184 mm, - : 
Besides these I have examined the following specimens of 7. hauxwelli : two 
topotypical dd ad. from Pebas, coll. Castelnan & Deville (one in the Paris, the 
other in the British Musenm); ¢ ad., Iquitos (H. Whitely, jun., coll.), 2 ad., Santa 
* Ibis, 1878, p. 57. tab. i. (Upper Amazons). 
