( 341 ) 
spots on the lesser wing-coverts, and the bend of the wing speckled with white. in 
addition to the two typical specimens, I have examined an adult male obtained on 
the Rio Purts and belonging to the Museu Goeldi, Para. 
(¢d) T. aethiops punctuliger Pelz. 
Thamnophilus punctuliger Pelzeln, Zur Orn. Bras. ii. p. 146 (1868.—Borba) ; Hellmayr, Nov. 
Zool. xiii. 1906. p. 339 (crit.) ; Snethlage, Journ. f. Orn. 1908, p. 509 (Villa Braga), - 
Hab. North Brazil : Borba (Natterer), Calama, Allianca, Maruins (Hoffmanns), 
right bank of the Rio Madeira; Villa Braga, left bank of the R. Tapajéz 
(Snethlage). | 
3 ad. Agrees with 7. a. juruanus in the clear plumbeous general coloration 
and blackish cap, but the median (as well as lesser) wing-coverts have white apical 
spots, and there is a distinct white interscapular patch. : 
Wing 76, 77; tail 60, 61 mm. 
? ad. Very similar to 7. a. polionotus, but averaging lighter. 
Wing 72—76 ; .tail 56—61 (see above). 
(e) T. aethiops incertus Pelz. 
Thamnophilus incertus Pelzeln, Zur Orn. Bras. ii, p. 149 (1868.—Paré), deser. orig. 9; Hellmayr, 
Nov. Zool, xiii. 1906. p. 367 (Prata, Para). 
Dysithamnus incertus Hellmayr, Nov. Zool. xii. 1905. p. 284 (crit. ; Igarapé-Assti, Pard). 
Thamnophilus simplex Sclater, 1bis 1873. p. 387. pl. 15, descr. orig. J 9 (Pard) ; Sclater & Salvin, 
P.Z.8. Lond. 1878. p. 139 (Vigia, Para); Snethlage, Journ. 7. Orn. 1907. p. 283 (Pard, 
8. Antonio do Prata, Resacca [Rio Capim], Sta. Maria de S. Miquel [Rio Guam4] ). 
T’. polionotus ? Snethlage, Journ, f. Orn. 1907. p. 284 (Para, Rio Capim). 
Hab. N.B. Brazil, Pard District: Par&é (Layard, Natterer, etc.), Vigia (Steere), 
8. Antonio do Prata = Igarapé-Assti (Robert, Hoffmanns, Snethlage), Resacca, on 
the R. Capim (Snethlage), Sta. Maria de 8. Miquel, on the Rio Guama (Snethlage). 
3 ad. Differs from the preceding races by its lighter, slate-grey coloration, 
and by lacking the blackish cap and the white apical spots to the upper wing- 
coverts, only the bend of the wing being freckled with white. Wings and tail are 
shorter, 
Wing 68—73 ; tail 55—60 mm. 
? ad. Differs from T. a. polionotus and T. a. punctuliger by having the back 
paler rufous brown, the sides of the head and throat clearer ferruginous, and the 
belly of a paler tint, varying from ochraceous to falvous. 
Wing 66—71 ; tail 55—61 mm. 
Obs. I have examined the two females named 7. polionotus? by Miss Snethlage 
and found them identical with Pelzeln’s type. 
204. Thamnophilus amazonicus Scl. 
Thamnophilus amazonicus Sclater, Proc. Zool. Soc. Lond. xxvi. 1858. p. 214. pl. 139. figs. 1, 2 (1858.— 
“Upper Amazons”) ; Pelzeln, J.c. p. 77 (Borba, Salto do Girao, Rio Madeira; Engenho do 
Gama, Rio Guaporé) ; Hellmayr, Nov. Zool. xiv. p, 370 (Borba). 
No. 656. ¢ ad., 8. Isabel, Rio Preto, 9. x. 1907.—Wing 72; tail 62; bill 
173 mm. : 
No. 620. ¢ ad., S. Isabel, 4. x. 1907.—Wing 68; tail 58 mm. 
Nos. 244, 513. 29 ad., Calama, 19. vii. 5, ix, 1907.—Wing 69 ; tail 59, 56} ; 
bill 164, 17 mm. 
