16 ARKIV FÖR ZOOLOGI. BAND 14. N:0 25. 



(collected i March and April) 2 — 3000 f. It will thus appear, 

 as if this species lived at a lower altitude than the foregoing. 

 The young may be described as f ollows : Forehead coloured 

 like pileum, not rafous, but dark brown minutely sprinkled 

 with greyish buff like the upper back. Sides of head and 

 superciliary stripes paler rufous than in the adult. Chin and 

 throat not uniformly black, but somewhat barred with rufous 

 The white band not developed. Breast and belly chestnut 

 rufous, but sides of chest and flanks rather broadly barred 

 with black and the barred feathers, at least partly provided 

 with light rufous shaft-stripes. Scapular region like that of 

 the adult bird, but more rufescent, and the anterior scapulars 

 provided with buffish white shaft stripes. Lower back and 

 upper tail-coverts dark brown with a fine sprinkling of rufous. 

 The bill is in dry state reddish yellow. 



Odontojpliorus söderströmii n. sp. — I ^ ^^7 1920, near 

 Napo 3—4000 f. 



Upper parts of head and nape dark chestnut brown. 

 The posterior supraciliary and supraauricular region some- 

 what more chestnut rufous without that a distinct band is 

 formed. Upper parts and sides of neck chestnut red, mottled 

 with black and with some slight sprinkling of white. Many 

 feathers ha ve fine white shaft-stripes, which are more or less 

 concealed. The general colour of the back and rump buffish 

 grey brown, which is produced by a mottling of black and 

 buff. Across the interscapular region there is a band of larger 

 black, buffish-edged blotches. On the lower back there are 

 to be seen smaller black subapical spöts and the feathers are 

 more or less tipped with buff. The anterior scapulars with 

 a more greyish mottling on the outer web, white shaft-stripes 

 (also present in the inter-scapular region) and with large 

 black blotches edged with rufous buff on the inner web. On 

 the longer scapulars the black blotches gradually develop 

 into subapical bands, and the longest ones are also broadly 

 tipped with ochraceous on the inner web. Small wing-coverts 

 more buffy brown than the back and with buffish white shaft- 

 stripes, which on the greater coverts develop into whitish 

 apical spöts b ordered with a black subapical spöt. Quills 

 blackish brown with buff mottlings on the outer web, which 

 on the secondaries have a tendency of forming transverse 

 bars. Chin and throat träns versely banded with rusty red 



