( 266 ) 
No. 536. ¢ ad., Jamarysinho, Rio Machados, 11. ix. 1907. “Iris brown, feet 
grey, bill blackish grey.” — Wing 55 ; tail 51; bill 10} mm. 
No. 152. ? ad., Calama, 2. vii. 1907. “Iris brown, feet and bill blackish.”— 
Wing 54; tail 53; bill 10} mm. 
This series, which is to be considered topotypical, does not differ in any way 
from Caura examples. In the males, the slate-grey of the flanks is separated by a 
distinct white stripe from the rosy red colour of the belly, forehead and crown are 
glossy black, and behind the eye there is a broad, lengthened stripe of white. The 
distinctness of G. p. paraensis Rothsch.* is thus fully confirmed. The range of the 
two forms is as follows :— 
(a) G. p. pelzelni Scl. 
North Bolivia: Falls of the Madeira (Rusby).t North Brazil : Destacamento 
do Ribeirio, Salto do Girao (Natterer), Borba, Calama (Hoffmanns), on the Rio 
Madeira; Jamarysinho, Rio Machados (Hoffmanns); Itaitiba (Hoffmanns, t 
Snethlage §), Villa Braga (Snethlage §), Rio Tapajéz; Arumatheua, left bank 
of Tocantins (Snethlage ||). British Guiana: Camacusa (H. Whitely, jun. 4). 
Venezuela **: Munduapo, Orinoco (Cherrie); Suapure (Klages), La Pricion, 
La Union, Nicare (André), Caura River. 
(4) G. p. paraensis Rothsch. 
N.E. Brazil: Prata near Parad (Hoffmanns *). 
18. Pachysylvia thoracica semicinerea (Scl. & Salv.). 
[Hylophilus thoracicus Temminck, Rec. Pl. col. livr, 29. tab. 173. fig. 1 (1822.—“ Brésil,” sc. Rio de 
Janeiro ; cf. Nov. Zool. xv. 1908. p. 20).] 
Hylophilus semicinereus Sclater & Salvin, P. Z. 8. Lond, 1867. p. 570. tab. xxx. fig. 2 (Para). 
H., thoracicus (nec Temminck) Pelzeln, Zur Ornith. Bras. ii, 1858. p. 70 (part. : Salto do Girao, 
Borba: Rio Madeira) ; cf. Nov. Zool. xiv. 1907. pp. 5-6. 
No. 645. 3 ad., 8. Isabel, Rio Preto, 8. x. 1907. “Iris light yellow, feet clear 
brown, bill dark grey.”—Wing 58 ; tail 47; bill 13 mm. 
No. 716. ¢ juv., S. Isabel, 19. x. 1907. “Iris white, feet light grey, bill 
black.” —Wing 56; tail 514 ; bill 11 mm. 
The differences noticed between topotypical Para specimens and those from 
more westerly localities (/.c.) do not prove to be constant. The adult ¢ is practically 
identical with several skins from Para. 
The young bird, whose back is still partly covered with the fluffy, brownish 
feathers of the nestling plumage, has the bill much shorter, narrower, and entirely 
black (instead of pale brown). The rectrices, too, are longer, distinctly pointed, and 
interiorily edged with pale yellowish. 
* Bull. Brit. O. C. xvi. 1906. p. 81 (Prata, Paré); Hellmayr, Nov. Zool. xiii, 1906. p. 355, 
} Allen, Bull, Amer. Mus. N.Y. ii. 1889. p. 79. 
t Hellmayr, Mov. Zool. xiv. 1907. p. 5. 
§ Snethlage, Journ. 7. Ornith. 1908, p. 497. 
|| Eadem, Lc. p. 521. 
J Salvin, Jdis 1885. p. 204. 
** Berlepsch & Hartert, Nov. Zool. ix. 1902. p. 10. 
