( 341 ) 



spots on the lesser wing-coverts, and the bend of the wing speckled with white, m 

 addition to the two typical specimens, I have examined an adnlt male obtained on 

 the Rio Piiriis and belonging to the Museu Goeldi, Para. 



((l) T. aethiops ptcnctuliger Pelz. 



Thamnophilus punduUijer Pelzeln, Ziu- Orn. Bras. ii. p. U6 (1868. — Borba) ; Hellmayr, Nov. 

 Zool. xiii. 1906. p. 339 (crit.) ; Snethlage, Jourii.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. Tapajoz 

 (Snethlage). 



i ad. Agrees with T. a. jurmnus 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 T. a. polionotus, but averaging lighter. 



Wing 72 — 76; tail 66 — 61 (see above). 



(e) T. aethiops incertus Pelz. 



ThatiiHojjhibis incertus Pelzeln, Zur Orn. Bras. ii. p. 149 (1868. — Para), descr, orig. J ; Hellmayr, 

 Nov. Zool. xiii. 1906. p. 367 (Praia, Para). 



Dysilhamnm incertus Hellmayr, Nov. Zool. xii. 1905. p. 284 (crit, ; Igarape-Assil, Pari). 



Thamnophilus simplec Sclater, Ihis 1873. p. .'587. pi. 15, descr. orig. ^ J (Pari) ; Sclater & Salvin, 

 P.Z.S. Loud. 1878. p. 139 (Vigia, Pani) ; Snethlage, .Tourn. f. Orn. 1907. p. 283 (Par^, 

 S. Antonio do Prata, Resacca [Rio Capim], Sta. Maria de S. Sliquel [Rio Guama] ). 



T. polionotus? Snethlage, Journ.f. Orn. 1907. p. 284 (Para, Rio Capim). 



Hab. N.E. Brazil, Para District : Pari (Layard, Natterer, etc.), Vigia (Steere), 

 S. Antonio do Prata = IgarapS-Assu (Robert, Hoffmanns, iSnetlilage), Resacca, on 

 the R. Capim (Suothlage), Sta. Maria de S. Minuel, on the Rio Guama (Snethlage). 



c? ad. DiflFers 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. ptiitctidiyer 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 fulvous. 



Wing 66 — 71 ; tail 55 — 61 mm. 



Obs. I have examined the two females named T. polionotus ^ by Miss Snethlage 

 and found them identical with Pelzeln's type. 



204. Thamnophilus amazonicus Scl. 



Thamnophilus amazonicus Sclater, Proc. Zool. Sue. Loud. xxvi. 1858. p. 214. pi. 139. figs. 1, 2 (1858. — 

 ■'Upper Amazons") ; Pelzeln, I.e. p. 77 (Borba, Salto do Girao, Rio Madeira; Engenho do 

 Gama, Rio Guaporo) ; Hellmayr, Nov. Zool. x\\. p. 370 (Borba). 



No. 656. f? ad., S. Isabel, Rio Preto, 9. x. 1007.— Wing 72; tail 62; bill 

 17| mm. 



No. 620. ? ad., S. Isabel, 4. x. 1907.— Wing 68; tail 58 mm. 



Nos. 244, 513. ? ? ad., Calama, 19. vii., 5. ix. 1907.— Wing 69 ; tail 59, 56J ; 

 bill 16i, 17 mm. 



