Besides this, Dr. Burmeister has published several other contributions towards our knowledge of Argentine Ornithology, namely:—

(2) Sobre los Picaflores descriptos por D. Felix de Azara. Por Dr. German Burmeister. An. d. Mus. Publ. d. Buenos Aires, tomo i. p. 67 (1864).

[An essay on the eleven species of Trochilidæ, described by Azara, which appear reducible to six.]

(3) Extract from a letter addressed to Mr. Sclater on the Tyrannidæ found near Buenos Ayres. P. Z. S. 1868, p. 2.

[Contains a list of 10 species of this family.]

(4) Contributions to the Ornithology of the Argentine Republic and adjacent lands.—Part I. P. Z. S. 1868, p. 633.

[Notes on 13 species additional to those given in his Synopsis. Pachyrhamphus albinucha and Synallaxis sulphurifera are described as new.]

(5) Letter from, containing remarks on the Cracidæ in the Museum of Buenos Ayres. P. Z. S. 1871, p. 701.

[Contains remarks on three Argentine species.]

(6) Synopsis of the Lamellirostres of the Argentine Republic. P. Z. S. 1872, p. 364.