Recently published Ornithological Works. 209 



The Falconidae are divided into the subfamilies : 1. Falco- 

 nincR ; 2. Poliohieracince ; 3. Polyborinte ; 4. Her pet other ina . 

 Tabular keys of these subfamilies and of the orders are 

 supplied, based upon external characters, for identification. 

 The taxonomic characters proper are discussed at length in 

 the text. 



Very reasonably the author concludes that subfamilies 1 

 and 2 represent two parallel groups, equivalent to each other. 

 Subfamily 4, composed of Micrastur and Herpetotheres, 

 arises from the bifurcation of the two main branches ; 

 Microhierax and Poliohierux are two closely allied genera, 

 forming a little twig off the Falconine branch. 



Lastly follow very readable and interesting remarks on 

 geographical distribution, oecology, convergence of genera, 

 and similar questions, all represented in a way that shews 

 the intense amount of labour and thought which the author 

 has bestowed upon his favourite group. 



29. Tredgold on the Quaih of Matabeleland. 



[On the extensive Appearance of Quail in Matabeleland, 1901-2. By 

 C. H. Tredgold. Proc. Rhod. Sc. Assoc, vol. iii. p. 3 (1902).] 



The ' Proceedings of the Rhodesia Scientific Association' 

 (Buluwayo, 1899-1905), with a copy of which we have lately 

 been favoured, contain (amongst many other interesting 

 communications) a paper by Mr. Tredgold on the Harlequin 

 Quail (Coturnix delegorguei) , which occasionally appears in 

 enormous flocks in various parts of Matabeleland, and nests 

 there, but entirely disappears at other times. 



30. Tschusi zu Schinidhojfen on the Migration of the 

 J Fax wing. 



[Ueber den Zug des Seidenscliwanzes {Ampelis garrvda L.) im Winter 

 1903-4. Von Viktor Hitter v. Tscluisi zu Schmidhofi'en. Ornis, vol. xiii. 

 (1905).] 



This memoir contains an elaborate account of the great 

 irruption of the Waxwing into Middle and Southern Europe 

 in the autumn and winter of 1903-1. The birds spread 

 over France, Germany, Northern Italy, Austria, Hungary, 

 and Roumania. Beginning in October 1903, they are 



SER. VIII. VOL. VI. P 



