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(instead of olive-grey), and the rectrices warm brown edged with rufescent (not 
uniform olive-grey). Pileum and back are, furthermore, more or less brightly 
cinnamon-brown (instead of olive-grey or brownish olive), and the under parts 
deeper ochraceous. The female from Maruins agrees very closely with Natterer’s 
hen birds, while the one from Calama is less rufescent on the back and tail, 
pointing towards M. m. menetriesii, from which it can, however, easily be told by 
the colour of the upper wing-coverts, etc. 
The synonymy and range of the two races may be summarized as follows :— 
(a) Myrmotherula menetriesii menetriesii (D’Orb.). 
Myrmothera Menetriesii D’Orbigny, Voyage, Oiseaux p. 184 [(1838—Cochabamba, Yuracarés, 
Bolivia), descr. J ad., type in Paris Museum examined]. 
Myrmotherula menetriesii Ménégaux & Hellmayr, Bull. Soc, Philomat. Paris (9) viii. 1906. p. 51 
(Yuracarés [type]; N.E. Peru); Hellmayr, Nov. Zool. xiv. 1907. p. 69 (crit.; Teffé); 
Snethlage, Journ. f. Ornith. lvi. 1908. p. 16 (Bom Lugar, Monte Verde, Ponto Alegre : 
Rio Puris). 
M., boliviana Berlepsch, Journ. f. Ornith. xlix, p. 96 (1901.—San Mateo, N. Bolivia), deser. f 2 ; ef. 
 _ Hellmayr, Verhandl, Zool. Bot. Ges. Wien liii. 1903, p. 210 (crit.). 
M. brevicauda juruana Ihering, Revist, Mus, Paulist. vi. 1904, p. 440 (1905.—Rio Jurud, Brazil) ; 
ef. Hellmayr, Nov. Zool. xiv. 1907. p. 70. 
M. longipennis Sclater, Cat. Birds Brit. Mus. xv. p. 241 (part.: specimens p and gq: Rio Javarri, 
and Chamicuros, East Peru). 
Hab. Eastern Bolivia: Cochabamba, Yuracarés (D’Orbigny), San Mateo, 
(Garlepp). W. Brazil: Rio Javarri (Bates); Teffé, R. Solimoéns (Hoffmanns) ; 
Rio Jurad (Garbe) ; Bom Lugar, Monte Verde, Ponto Alegre, on the Rio Paris. 
N.E. Peru (Castelnau) : Chamicuros (Hauxwell). 
Examined: 1 & ad., Yuracarés, type of M. menetriesit; 2 dd ad.,1 ¢d imm., 
1 ? ad., San Mateo, incl. the type of M. boliviana; 1 d ad., R. Jurnd, type of 
M. brevicauda juruana; 2 33,2 2% ad., Rio Parts; 4 dd ad.,1 d imm., 5 ??, 
Teffé; 1 ¢ ad., R. Javarri; 1d ad., Chamicaros; 1d, 2 2? ad., N.E. Peru 
(Castelnau coll. in Paris Museum). 
(6) Myrmotherula menetriesii berlepschi Hellm. 
Myrmotherula berlepschi Hellmayr, Verhandl. Zool. Bot. Geselisch. Wien liii. p. 211 (1903.—Salto do 
Girao, Rio Madeira), 
A. menetriesii (nec D’Orbigny) Pelzeln, Zur Orn, Bras. ii, 1868. p. 82 (Ribeirdo, Salto do Girao, 
Rio Madeira). 
Hab. Central Brazil, right bank of the upper Rio Madeira: Salto do Girao, 
Ribeiréo (Natterer), Calama (Hoffmanns), Maruins on the Rio Machados 
(Hoffmanns),* 
Examined: 2 8S,1 ¢ ad., Salto Girao, incl. type of M. berlepschi, 1 ¢ ad., 
Ribeirao, all in the Vienna Museum; 2 dd ad. 1 2 ad, Calama, 1 ?, Marnins, in 
the Tring and Munich Museums. 
(222. Myrmotherula cinereiventris Scl. & Saly. 
Cf. Nov. Zool. xiv, 1907. p. 384 (Borba). 
Right bank of the Madeira: Borba (Hoffmanns). Widely distributed in 
Amazonia from Cayenne to Northern Peru and Eastern Ecuador, and most probably 
a geographic race of M. menetriesii. Cf. my remarks in Nov. Zool. xiv. 1907. 
p. 70.] 
* Also recorded by Snethlage from Villa Braga (left bank of Tapajéz) and Alcobaga, Tocantins 
(Journ. f. Orn, 1908, pp. 512, 532). I have not seen specimens from either of these localities. 
