498 



Recent Literature. \oq,\. 



tion, Teratological Variation, Bionomic Variation, Statistical Variation, 

 Mathematical Variation, Crosses and Hybrids, Evolution. 



Geographical Distributio?!., divided into : General, The Earth as a 

 Whole, Scandinavia, Russia in Europe, German Empire, Holland, British 

 Islands, France, Portugal, Italy, Switzerland, Austria-Hungary, Balkan 

 Peninsula, Mediterranean and Islands, Baltic and Islands, Asia, Asiatic 

 Russia, China and Dependencies, British India, Malay Peninsula and 

 Archipelago, Baluchistan, Asiatic Turkey and Arabia, Africa, Mediter- 

 ranean States, N. E. Africa, The Soudan, West Africa, Congo State and 

 Angola, East Africa, South Africa, Madagascar, North America, Alaska, 

 Canadian Dominion West, Canadian Dominion East, United States, N. E. 

 United States, S. E. United States, W. United States, Central and South 

 America, Mexico, West Indian Islands, Venezuela, Colombia and Ecuador, 

 Peru, Argentina and Uraguay and Paraguay', Australasia, New Guinea and 

 Islands from Wallace's Line, Australia, Q^ieensland, New South Wales, 

 Victoria, West Australia, New Zealand, Arctic, Arctic Ocean, Islands 

 North of Europe and Asia, Atlantic, North Atlantic Ocean, Canaries, 

 Azores, Madeira, Cape Verde (these four as one division). Pacific, Behr- 

 ing Sea and Islands, Sandwich Islands, Ladrone, Pelew, Caroline and 

 Marshall Groups, with other Islands N. of Equator and W. of iSo°, 

 Galapagos Islands, Antarctic, Islands to Southward and Southeast of New 

 Zealand. 



Taxonomy and Syste7?iatic, diwidtd into : General, Casuarii, ^pyor- 

 nithes, Pygopodes, Impennes, Tubinares, Steganopodes, Herodiones, 

 Anseres, Alectorides, Fulicarise, Limicolae, Gaviae, Alcte, Pterocletes, Col- 

 umbae, Accipitres, Crypturi, Galli, Coccyges, Psittaci, Coraciae, Striges, 

 Anisodactylae, Caprimulgi, Cypseli, Heterodactylae, Pici, Passeres. The 

 titles under each of these groups are divided into General and Special, 

 except in the case of Passeres, where the titles are arranged under the 

 headings of families, and again subdivided under General and Special. 

 Under Special the matter is arranged alphabetically' by genera, the tech- 

 nical name being the title, followed by the name of the author in heavy 

 type, and the reference. Then follows the ' List of New Genera and 

 Species.' 



This system of minute classification is, to a degree, a convenience, at 

 the cost, however, of much space and the multi-reprinting of many of 

 the titles,' and renders almost unnecessary the annotation of titles of 

 papers of a mixed or more or less general character. The distribution of 

 titles under these numerous subdivisions is quite open to criticism, and 

 even the utility of many of the subdivisions may be questioned, but lack 

 of space forbids more than a brief illustration of these general state- 



1 Thus the title of Buturlin's paper on the Wild Geese of the Russian 

 Realm is entered in full no less than seven times, instead of once, with 

 cross-references under Anseres and the Faunistic divisions. 



