( 398 ) 
“ Tris white, feet green, bill black, buff and yellow.” 
The series forms the passage to the northern P, c. castanotis, the crown being 
black without any chestnut tinge, but the sides of the head and throat are coloured 
as in australis from Paraguay and Mattogrosso. Occasionally black-headed 
examples are also met with in the latter countries. . 
P. ¢. australis inhabits the Brazilian central provinces Goyaz and Matto- 
grosso (north to the Rio Machados), Eastern Bolivia and Paragnay. Cf. Nov. Zool. 
xv. 1908. pp. 84-5, 
346. Pteroglossus bitorquatus sturmii Natt. 
[Pteroglossus bitorquatus Vigors, Zoolog. Journ. ii. p. 481 (1826.—no locality).] 
Pteroglossus Sturmii Natterer in Sturm, Monogr. Rhamphast. Heft 3 [p. 13. tab. 7] (1842.—Borba, 
Rio Madeira) ; Pelzeln, Zur Orn. Bras. iii, 1869. p. 237 (Borba). 
Nos. 488, 447. 3 ad., od fere ad., Calama, 24, 30. viii. 1907. “Iris brown, 
feet green, upper mandible and tip of lower one yellowish green, remainder of the 
latter black.”—Wing 128, 124 ; tail 143, 150; bill 100 mm. 
No. 410. 3 juv., Calama, 17. viii. 1907. Soft parts as above-— Wing 118; 
tail 123; bill 94 mm. 
No. 589. g ad., Jamarysinho, Rio Machados, 25. ix. 1907. Soft parts as 
above.-—Wing 124; tail 134; bill 97 mm. 
No. 576, ? imm., Jamarysinho, 20. ix. 1907. “Tris reddish brown, feet dark 
green, bill coloured as above.”— Wing 122; tail 125; bill 79 mm. 
No. 939. ¢ ad., Maruins, Rio Machados, 21. vi. 1908. “ Iris dark brown, feet, 
light green, bill yellowish green, lower mandible black.”—Wing 123; tail 143; 
bill 94 mm. 
Nos. 905, 938. 2 ad. 2 vix ad., Maruins, 4, 21. vi. 1908. “Iris brownish red, 
feet and bill as above.”—Wing 123, 116 ; tail 140, 131; bill 83 mm. | 
No. 906. 2 juv., Maruins, 4. vi. 1908. “Tris reddish brown, feet pale plum- 
beous, upper mandible dull yellowish, lower one black.”—Wing 119; tail 133; 
bill 79 mm, 
This rare species was hitherto represented by a single male specimen in the 
Vienna Museum, obtained by Natterer, in 1830, near Borba on the right bank of 
the Rio Madeira. 
P. b. sturmii is most nearly allied to P, 8. bitorquatus from the Para district, 
and, like it, has a broad yellow jugular band, but differs by its black lower 
mandible, the extreme tip only being yellowish. Another difference between the 
two forms appears to exist in the colour of the eye. Both Natterer and Hoffmanns 
state the iris to be brown or reddish brown in P. 6, sturmit, orange or reddish 
yellow in P. 6. bitorquatus. 
The adult 3 (Nos. 447, 488, 589, 939) have the top of the head glossy 
black and a large spot on the chin dull black. The upper back is strongly suffused 
with crimson, and there is a patch of the same colour on the uropygium. 
The young male (No. 410) has the red on the mantle and breast duller and 
less extended, and the upper mandible duller, more greyish yellow. The upper 
Wing-coverts as well as the feathers of the lower back show narrow pale reddish 
apical margins, 
The females differ from the males by having the top of the head dull brownish 
black, the sides of the head and the throat darker chestnut, and by lacking the 
blackish chin-spot. Besides, all dimensions are less, especially the bill is much 
° 
