( 358 ) 



No. 562. S ad., Jamarysinho, 17. ix. 1907.— Wing 70 ; tail 46 J ; bill 17 mm. 



No. 840. <S atl., Marmellos, 22. xii. 1907.— Wing 67 ; tail 45 ;'bill 17 mm. 



Nos. 1,816, 907. ?? ad., Calama, 8. vi. 1907; Marmellos, 16. xii. 1907; 

 Marnins, 5. vi. 1908.— Wing 65—68 ; tail 42—46 ; bill 17 mm. 



" Iris browu, feet plumbeons or bluish black, bill black." 



Identical with examples from British Guiana, C'aura Valley, etc. B. I. 

 anffusiirostris is widely distributed in Amazonia, from the Tocantins westward 

 to the rivers Purus and Juriia, and to Teffe, Rio Solimoens, in the north. 



[234. Hypocnemis myotherina melanolaema Scl. 



rThamnophilas myotherhms Spix, Ai'. Bras. ii. p. 30. tab xlii. fig. 1 [(^ ad.] (18"25. — part. : 



descr. of jj only, no locality ; ct. Nnv. Zool. xiv. 1907. pp. 20-1).] 

 Hi/pociiemis melannlaema Sclater, Proi:. Zool. Soc. Lond. xxii. 18ot. p. 254. pi. Ix.xii. fig. 2 (1855. — 



" in Peruria, Chamicurros "), 

 U. miiotherimi mefanolaenta Hellmayr, Xor. Zonl. xiv. 1907. p. 379 (Humaytha). 



Left bank of the Madeira ; Humaytha (Hoffmanns). Not obtained on his 

 second journey. 



On the right bank of tlie stream it is replaced by the next form.] 



235. Hypocnemis myotherina sororia n. subsp. 



Hypornemh m//otheriim melanoliuma (neoSc'l&leT)'H.el\ma.jT, Not'. Zool. xiv. 1907. p. 379 (part.: 

 No. 1311, (J vix ad., Paraiso). 



Nos. 13, 31, 136,"160, 181,259,400. c?c? ad., Calama, 10, 13,30. vi., 3, 7,23. vii., 

 15. viii. 1907. " Iris red or brownish red, feet plumbeous, bill black." — Wing 62 — 

 65 ; tail 35-41; bill 15|— 16i mm. 



No. 159. c? vix ad., Calama, 3. vii. 1907. "Iris red-brown, feet grey, bill 

 black."— Wing 63 ; tail 4n| ; bill 16J mm. 



No. 540. (? !id., Jamarysinho, Rio Machados, 12. ix. 1907. ''Iris brownish 

 red, feet clear grey, bill black." — Wing 64 ; tail 41 ; bill 15 mm. 



Nos. 169, 403. Jc? juv., (Jalama, 6. vii., 16. viii. 1907. " Iris browu, feet grey, 

 bill black."— Wing 62, 63 ; tail 38J, 41 ; bill 16 mm. 



Nos. 20, 23, 83, 85, 158, 258. ? ? ad., Calama, 11, 21. vi., 3, 23. vii. 1907. 

 " Iris brown or reddish brown, feet plumbeous, bill black, lower mandible greyish." — 

 Wing 62—64; tail 37—41 ; bill 15— 16i mm. 



Nos. 12, 125. ? ? jnv., Calama, 10, 29. vi. 1907. " Iris browu, feet grey, bill 

 black, lower mandible pale." — Wing 61, 64^ ; tail 40; bill 15, lb!, mm. 



Nos. 932, 1013. ? ? ad., Maruins, Rio Machados (Vargem), 18. vi., 13. vii. 

 1908. " Iris brown, feet grey, bill black, below greyish." — Wing 63, 63J ; tail 

 4i)i, 42 ; bill 15, 15J mm. 



rj ad. Much like //. m. melanolaema Scl. from Northern Bolivia, Peru, and 

 Humaytha, left bank of the Rio Madeira, but averaging smaller and the cinereous 

 colour of the under parts somewhat richer. Palo baud behind the black frontal 

 edge and superciliary streak ill-detined, greyish white, exactly as in its western 

 representative. 



? ad. Agrees with //. m. mdnnolaema Scl. in the pale lower mandible, but the 

 breast and abdomen are much darker, deej) ochraceous as iu //. m. ochrolaema 

 Hellm. It differs, however, from lioth iu having the throat neither ijure white like 



