Recently published Ornithological Works. 155 
hybrids taken when adult and in the wild state. The first is 
attributed to Turdus pilaris and T. merula, and the second 
to Dafila acuta and Avas buscas. 
22. Matschie on the Zoo-geography of Western Micronesia. 
[Bemerkungen zur Zoogeographie des westlichen Mikronesiens. Von 
Paul Matschie. J. f. 0. 1901, pp. 109-114. 
Die Vogelwelt der neuesten deutschen Besitzungen in der Siidsee. 
Von Paul Matschie. Illustrirte Deutsche Monatshefte, Ixxxix. pp. 405- 
419.] 
Under the name Micronesia the author designates the 
Pacific Islands lying between 130° and 180° W. long., i.e. 
the Pelew Islands, Yap, the Mariannes, and the Carolines. 
After quoting V^'^iglesworth's ' Aves Polynesise/ he mentions 
recent additional authorities on this Avifauna and discusses 
its various relationships. Most of the genera not endemic 
are apparently Papuan. Tables of distribution are given, 
and it is shown that Micronesia may be divided into five 
smaller Avifaunas — Pelews, Yap, Mariannes, and V\^estern 
and Eastern Carolines. 
The same subject is pursued in the popular article in 
Westermann^s 'Illustrirte Deutsche Monatshefte,^ and is 
illustrated with figures of some of the more remarkable birds 
of Micronesia, and with a map, which shews the proposed 
divisions of its Avifauna very plainly. 
23. Matschie on the Cassowaries. 
[Einige Bemerkungen iiber die Verbreitung und Systematik der 
Kasuare. Von Paul Matschie. J. f. 0. 1901, pp. 265-269.] 
The publication of Mr. Rothschild^s elaborate memoir on 
the Cassowaries in the ' Transactions of the Zoological 
Society of London ' has induced Herr Matschie to prepare 
a series of notes on various points in the distribution and 
systematic arrangement of these birds. Amongst these he 
calls attention to the fact that the figures given by Mr. Roth- 
schild of Casuarius uni-appendiculatus do not agree accurately 
with Blyth's original description of this species. Herr 
Matschie therefore believes these figures to represent a 
