1891. Hartert. Katalog der Vogelsammlung im Museum der Senchenberg. Naturf. Ges. Frankfurt-a-M.
(Alca impennis, Turdus terrestris, Chaunoproctus ferreorostris, Hemiphaga spadicea mentioned.)
1891. Will. Dutcher. The Labrador Duck. A revised list of the extant specimens in North America, with some historical notes.
In Auk 1891, pp. 301-316, pl. 2.
1894. Will. Dutcher. The Labrador Duck. With additional data respecting extant specimens.
In Auk 1894, pp. 4-12.
1892. Forbes, H. O. Preliminary Notice of Additions to the Extinct Avifauna of New Zealand (Abstract).
In Trans. and Proceed. New Zealand Inst. Vol. XXIV, pp. 185-189.
(The editors say that the paper is published in abstract, as it had been impossible to prepare the drawings for its illustrations in time.—It is a most pitiful and unscientific proceeding to publish such preliminary abstracts containing insufficiently founded names and complete "nomina nuda" without publishing a fuller account; such, as far as I know, has never appeared.)
1892. H. O. Forbes. Aphanapteryx and other remains in the Chatham Islands.
In Nature, Vol. XLVI, p. 252.
(Short notes on avian remains which, unfortunately, were never properly studied afterwards.)