( 356 ) 
Wing 56—60 ; tail 36—40 mm. 
Obs. The five specimens from the Rio Negro, obtained by Natterer, are 
practically identical with the series from Cayenne. 
Examined: 1 & ad., Camopi; 1 ¢ ad., Saint-Jean-du-Maroni; 1 ¢ ad., 
Ipousin; 2 dd ad., 1 %, Cayenne; 1d, 1 %, Oyapoc; 35d, 2 #%, Marabitanas 
Rio Negro. 
(b) Hypocnemis naevia theresae (Des Murs). 
Conopophaga Theresae Des Murs in Castelnau’s Voyage, Oiseaux p. 51, tab. xvi. fig. 2 [ 2] (1856.— 
Rio Javarri, Peru). 
C. naevia (not of Gmelin) Lafresnaye & D’Orbigny, Syn. Av. in Mag. Zool, cl. ii. 1837. p. 13 
(Yuracarés, Bolivia); D'Orbigny, Voy. Amér, mérid., Oiseauc 1838. p. 186 (part.—@: 
Yuracarés). 
Hypocnemis theresae Sclater, P. Z. 8. Lond. 1858. p. 67 (Rio Napo) ; idem, /.c. p, 253 (Rio Javarri : 
Castelnau & Deville); idem, Cat. Amer. Birds 1862. p. 188 (Upper Amazons, Bates ; Rio 
Napo) ; Sclater & Salvin, P. ZS. 1866. p. 187 (Upper Ucayali, E. Bartlett coll.) ; iidem, Jc. 
1867. p. 750 (Xeberos, E, Bartlett coll.) ; iidem, /.c. 1873. p. 185 (Cosnipata, H. Whitely coll.) ; 
iidem, I.c. p. 276 (Upper Ucayali, Xeberos, Chamicuros : E. Bartlett); Taczanowski, P. Z.8, 
Lond. 1874, p. 531 (Monterico: Jelski coll.) ; idem, /.c. 1882. p. 32 (Huambo, Yurimaguas : 
Stolzmann) ; idem, Orn, Pérow ii, 1884. p, 72 (Peru); Sclater, Cat. Birds Brit. Mus, xv, 1890. 
p. 292 (part. : specimens c—m) ; Salvadori & Festa, Boll, Mus. Torino xiv. No. 362. 1899. p. 31 
(Santiago, Zamora, East Ecuador: E. Festa); Ihering, Revist. Mus. Paul. vi. 1905, p. 442 
(Rio Jurué). 
H. naevia theresae Ménégaux & Hellmayr, Bull. Soc. Philomat, Paris 1906. p. 46 (crit.; Rio 
Javarri, East Ecuador, Iquitos, Bolivia). 
Hab, 8.E. Colombia: Cuembi, Rio Patumayo (G. Hopke coll.—Mus. H. v. B.). 
Eastern Ecnador: Rio Napo (L. Petit coll. in Tring ; in Mus. Brit. ex Verreaux), 
Santiago, Zamora (E. Festa), Sarayacu (Buckley). N. Pera: Iquitos (Whitely), 
Xeberos, Chamicuros, Upper Ucayali (Bartlett), Huambo, Yurimaguas (Stolzmann), 
Guayabamba (O. T. Baron), C. Pera: Chuchurras, Hudnuco (W. Hoffmanns), 
Monterico (Jelski). S.E. Peru: Cosnipata (Whitely), Marcapata, Cuzco (0. 
Garlepp). W. Brazil: Rio Javarri (Castelnau & Deville); Rio Jurnd (Garbe);_ 
Calama, Allianca on the Rio Madeira; Maruins, Rio Machados (Hoffmanns) ; 
Lower Amazonia: Villa Braga, left bank of the R. Tapajéz (Snethlage). North 
Bolivia : Yuracarés (D’Orbigny), San Mateo (G. Garlepp). : 
$ ad. Differs from H. ». naevia by having all the upper back black with 
much larger and more numerous buffy white spots, the top of the head and nape 
slate-grey, the rump and upper tail-coverts pale olive-brown, the tertials black 
tipped with white, the tail-feathers ashy or olive-grey with much broader 
(6—8 mm.) black subterminal and white apical bands, and the flanks much paler, 
creamy buff. Even immature birds are readily distinguishable by the olive-brown 
ground-coloar of the head and back, and paler flanks, besides the other characters. 
Wing 58—64 ; tail 38—43 mm. 
? ad. In addition to the points of difference given under the heading of the 
male, the females of H. n. theresae have the black malar stripe much broader than 
in the typical race, and the throat pure white. 
Wing 58-62 ; tail 38—42 mm. 
Obs. I could not find any constant difference between examples from various 
localities. Iwo dd imm. from Villa Braga, left bank of the Tapajéz, agree 
exactly with others from more western countries. All of the many females I have 
seen have the foreneck coarsely spotted with black. 
: Examined: 1 ? ad., Cuembi, R. Putumayo, 8.E. Colombia—Mus. H. v. 
erlepsch; 4 dd, 1 $, Rio Napo, Petit coll. in Tring Museum; 1 %, Rio 
