1869. ] BIRDS FROM THE ARGENTINE REPUBLIC. 161 
2. STEPHANOPHORUS LEUCOCEPHALUS (Vieill.). 
Lindo azul cabeza blanca, Azara, Apunt. i. p. 375. no. 93. 
Tanagra leucocephala, Vieill. N. D. xxxii. p. 408, et E. M. 774. 
Several skins of this Tanager. 
3. Donacospiza ALBIFRONS (Vieill.); Cab. Mus. Hein. i. p.136. 
Poospiza albifrons, Burm. 1. c. p. 484. 
Cola aguda vientre de eanela, Azara, Apunt. i. p. 263. no. 234. 
Poospiza oxyrhyncha, Sclater, P. Z. S. 1864, p. 168, ex MS. Natt. 
On comparing the present specimen with Sclater’s type of Poospiza 
oryrhyncha, there remains no doubt of their identity. Natterer’s 
specimen in Sclater’s collection, which was obtained at Curytiba in 
Brazil, has the tail-feathers rather worn. The species is well figured 
in the ‘ Voyage of the Beagle’ (t. 29) as Ammodramus longicaudatus. 
4. SYCALIS CHLOROPSIS. 
Crithagra chloropsis, Bp. Consp. i. p. 521. 
Sycalis chloropis, Burm. Journ. f. O. 1860, p. 257, et La Plata- 
Reise, ii. p. 489. 
A pair of what we suppose to be this Sycalis, which has not been 
very sufficiently described either by Bonaparte or Burmeister. It 
is most nearly allied to S. brasiliensis, but rather smaller, with the 
front less deeply orange, and the back strongly striated with fuscous. 
5. STURNELLA DEFILIPPII, Bp.; Sclater, Cat. A. B. p- 138. 
Trupialis militaris, Burm. 1. ce. p. 490. 
Tordo degollado primero, Azara, Apunt. i. p. 304, no. 68. 
Easily known from the true S. militaris (which is found near 
Mendoza and along the Cordilleras) by its black under wing-coverts. 
6. AMBLYRHAMPHUS HOLOSERICEUS (Scop.); Sclater, Cat. 
A. B. p. 137. 
A. ruber, Burm. l. c. p. 491. 
Tordo negro cabeza roxa, Azara, Apunt. i. p. 316. no. 72. 
7. Picotapres aNnGustrrostris (Vieill.); Lafr. Rev. Zool. 
1850, p. 151. 
Trepador comun, Azara, Apunt. ii. p- 279, no. 242. 
Nearest to P. bivittatus, as pointed out by Lafresnaye, but re- 
cognizable by the well-marked striz below and the longer beak. Not 
mentioned by Burmeister. 
8. Myrarcuus swarnsont, Cab. et Heine, Mus. Hein. ii. p. 72. 
Suiriri pardo amarillo menor, Azara, Apunt, ii. p. 138. no. 193. 
We are inclined to think this form may be really distinguishable 
from M. ferox, although in some cases it is exceedingly difficult to 
say to which of the two species a particular skin should be referred. 
A Nattererian specimen of Myiarchus cantans (Pelzeln, Orn. Bras. 
Proc. Zoo. Soc.—1869, No. XI. 
