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unique in the Vienna Masenm. 7. leucura is a near ally of 7. albitorques,* with 
which it agrees in having the lores beset with black feathers, and the auricular 
region whitish ; but differs at a glance by its pale greyish, at the tip almost white 
tail, without any trace of black. The bill too is much smaller. Although the 
type is an immature bird, I think there can be no doubt about its being an excellent 
form. It has the following dimensions: wing 102; tail 65; bill 16 mm, 
Farther south, on the Rio Guaporé (Villa Bella de Mattogrosso, Engenho 
do Gama), in Western Mattogrosso (Chapada, Coramba), and in Eastern Bolivia 
(Chiquitos, Santa Cruz-de-la-Sierra), another closely related species, 7. pelzelni 
Salv. & Godm.,+ is met with. This form is nearly allied to 7. i. inquisitor, of 
South-Eastern Brazil, but differs by the greater extent of white at the base 
of the tail; besides, the rectrices show distinct white apical margins. From 
T. albitorques and T. leucura it may at once be distinguished by its black (instead 
of white) ear-coverts. ] 
147. Hadrostomus minor (Less.). 
Querula minor Lesson, Traité d’Orn, livr. 5. p. 363 (end of 1830.—Cayenne). 
No, 292. ¢ ad., Calama, 29. vii. 1907.—Wing 894; tail 67; bill 18 mm. 
No. 405. ¢ ad., Calama, 16. viii, 1907.—Wing 92; tail 69; bill 19 mm. 
No. 1064. f ad., Las Ongas, Manicoré, 18. viii. 1908—Wing 90; tail 63}; 
bill 17 mm. 
“ Tris brown, feet and bill black.” 
Agreeing with a series from Cayenne, Venezuela (Caura), Bogota, ete. 
The female of H. minor may easily be distinguished from that of H. rufus 
(atricapillus) by its blackish (not yellowish white) lower mandible. Besides, the 
back is dull olive, but slightly mixed with brownish, instead of being, as in 
H. rufus, bright cinnamon-rafous like the upper tail-coverts ; the cheeks, auricular 
region, and under parts are much darker, deep ochraceous, instead of buff, ete., ete. 
H. minor is new to the fauna of the Rio Madeira; but Natterer got a male 
on the Rio Guaporé,t and D’Orbigny obtained specimens in Guarayos and Yuracares, 
Eastern Bolivia. § 
148, Pachyrhamphus marginatus (Licht.). 
Todus marginatus Lichtenstein, Verz. Dubl. Berliner Mus. p. 51 (1823.—Bahia; = 2); ef. 
Berlepsch, Nov. Zool. xv. 1908. p. 141. 
Pachyrhamphus atricapillus (nec Merrem) Pelzeln, /.c. p. 121 (Borba). 
No. 1006. 3 ad., Marnins, 12. vii. 1908.—Wing 674; tail 51; bill 13 mm. 
No. 1043. ¢ ad., Maruins, 21. vii. 1908.—Wing 65 ; tail 48; bill 14 mm. 
No. 1044. ¢ juv., Maruins, 21. vii. 1908.—Wing 65 ; tail 50; bill 124 mm. 
“Tris brown, feet and bill black.” 
The Maruins specimens agree with a series from Venezuela (Caura), Rio 
* Specimens from Chyavetas, Peru (Brit. Museum), Barra do Rio Negro (Vienna Mus,), and Bogota 
collections (in Tring) examined. The Central American form is different. 
t Tityra pelzelni Salv, & Godm., Biolog. Contr. Americ. ii. p. 120 (1890.—Mattogrosso), ee 
Psaris inquisitor (nec Licht.) Lafr. & D'Orb., Syn. Av, i. in Mag, Zool, 1837. cl. ii. p. 41 (Chiquitos, 
Santa Cruz, Bolivia). 
Tityra inquisitor Allen, Bull, Amer. Mus, v. 1893. p. 110 (Corumb4, Chapada). 
f. albitorques (nec Dubus) Pelzeln, Zur Orn. Bras. ii, 1868, p. 120 (part.: Engenho do Gama, 
Matogrosso),—All these specimens were examined by me. 
t Pelzeln, Zc, p. 120, 
§ D'Orbigny, Voyage, Oiseausx p, 302 (part.). 
