( 314 ) 



Mns. Tring (?), Rio Jordao, Miuas. Wing 74i ; tail 67 ; bill ITii min. 



Mus. Bcrlepscb, ?, Bebedouro, iv. 1904. Wing 75 ; tail 08 ; bill i:ij mm. 



Mns. Paulist, ?, Barretos, May 19U4. No. 4507. Wiug 74; tail 08 ; bill 

 144 mm. 



Mus. Panlist., 1240, c?, Jaboticabal, S. Paulo. Wing 79^ ; tail 78 mm. 



Mus. Brit. ((?) ad., Babia. (Type of ^1. ima-hereri Scl. k Salv") Wing 82 ; tail 

 73 ; bill 14| mm. 



The distribution of A. Jiavirostris is as follows : Bnliia (Wucherer) ; Minas 

 Geraes : Lagoa Santa and Sette Lagoas (Roinhardt & Lund) ; Rio Jordao, 

 province Aragnay, 700 — 900 m. (A. Robert coll. —Mus. Tring); north-eastern 

 S. Paulo : Jaboticabal (Lima coll. — Mus. Paulista) ; Bebedouro aud Barretos, Rio 

 Grande (Garbe coll. — Mus. Paulista et Tring) ; Santa Maria (Behn coll. — Mus. 

 Berlin). The locality Cametii. Lower Amazons (specimen in Mus. Berlin), seems to 

 me a little doubtful. 



A. Jiavirostris is not at all related to A. silens, but a very near ally of 

 A. p. polionotus and .4. p. decillii, from both of which it only differs in having the 

 back olive-green (instead of cinereous). A. silens, on the other hand, is characterised 

 by its entirely black bill, a black chin-spot, and by the lengthened snperciliaries 

 which commence on the front instead of above the eye. 



10. Saltator azarae D'Orb. = Saltator coerulescens azarae D'Orb, 



Sahator Azarae D'Orbigny, Voijage AnU-r. Mi'rki., 0/se««.c (publ. between 18,^8 and 1847) p. 287 

 [" dans les provinces de Moxos et Santa-Cruz de la Sierra en Boli\-ie "]. 



Four specimens in the Paris Museum, labelled as follows : 



No. 1 (mounted) : " Saltator azarae D'Orb. (type) Mojos. D'Orbigny (1834— 

 D. 251— 317) male." Wing 104 ; tail 92 : bill 20 mm. 



No. 2 (skin): " D. 317. AJojos. Saltator azarae D'Orb. D'Orbigny, 1834." 

 Wing 110 ; tail 100; bill 20 mm. 



No. 3 (skin) ; " D. 317. Mojos. Saltator azarae D'Orb. 251 ; D'Orbigny, 1834." 

 Wing 111 ; tail 100; bill 20 mm. 



No. 4 (mounted) : " Saltator azarae D'Orb. (type). Sta 0-«.;— D'Orbigny, 

 (1834. D. 317— 251)-femelle." Wing 102 ; tail 98 ; bill 21^ mm. 



Nos. 1, 2 and 3 agree very closely with the dark-backed form inhabiting the 

 Upper Amazonian region. Compared with two adult birds from Peru (biuitos 

 and C'hanchamayo) they are a shade paler both on the upper and lower surface, 

 but very much darker than true 5'. c. coerulescens. From the latter they are 

 also distinguished by having the outer webs of the remiges dark slate-colour, in 

 which respect they agree exactly with Peruvian specimens. 



D'Orbigny's female, No. 4, however, does not belong to this form, but is in 

 every way similar to typical S. c. coerulescens of Corrientes aud Paraguay. The 

 upper surface is olive-grey (not dark slaty olive as in Nos. 1 — 3), and the breast 

 much paler greyish buff. As in so many other instances, the form found in the 

 plains to the east of the Bolivian Andes proves to be the same as that inhabiting 

 the campos region of the interior of Brazil ; while farther to the north, on the 

 tributaries of the Rio Madeira, the Amazonian representative occurs. 



The slaty-backed form has been identified in the Cat. Birds xi. with Tnnagra 

 superciliaris Spix. The type of this species, however, agrees perfectly with 

 specimens from Paraguay (typical S. c. coerulescens), as will be shown in my forth- 



