Plate Page
I.[Mimus triurus][8]
II.[Cinclus schulzi][11]
III.[Fig. 1. Cyclorhis ochrocephala][23]
[Fig. 2. Cyclorhis altirostris][24]
IV.[Stephanophorus leucocephalus][38]
V.[Saltatricula multicolor][61]
VI.[Fig. 1. Molothrus badius, ad.][95]
[Fig. 2. Molothrus rufoaxillaris, pull.][86]
VII.[Tænioptera rubetra][120]
VIII.[Phytotoma rutila, ♂ et ♀][164]
IX.[Homorus lophotes][195]
X.[Drymornis bridgesi][199]

[INTRODUCTION.]

As regards its Bird-life the Neotropical Region, which, according to the arrangement usually adopted, consists of America south of the Isthmus of Tehuantepec together with the West Indies[1], may be most conveniently divided into six Subregions. These are:—

1. The Transpanamic Subregion, embracing the great Central-American Isthmus from Tehuantepec down to Panama.

2. The Antillean Subregion, containing the West-India Islands.

3. The Colombian Subregion, containing the South-American littoral and the adjacent Andean ranges in Venezuela, Colombia, Ecuador, Peru, and Bolivia.

4. The Amazonian Subregion, containing Guiana and the valleys of the Orinoco and Amazons and their confluents.

5. The Brazilian Subregion, containing the great wooded and campos districts of Southern Brazil and Paraguay.