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FALCONIDÆ. 636. Polyborus 637. Ibycter 638. Circus 639. Micrastur 640. Geranospiza 641. Antenor... 642. Astur 643. Accipiter 644. Heterospicias ... 645. Tachytriorchis 646. Buteo 647. Buteola 648. Asturina 649. Busarellus 650. Buteogallus 651. Urubutinga 652. Harpyhaliæetus 653. Morphnus 654. Thrasaëtus 655. Lophotriorchis 656. Spiziastur 657. Spizaëtus 658. Herpetotheres... 659. Nauclerus 660. Rostrhamus 661. Leptodon

2 The whole region

California and Florida 8 Guatemala to Terra del Fuego 3 Nearly the whole region Almost cosmopolite 7 Trop. North and South America 2 Trop. North and South America 2 Mexico to Chili and La Plata California and Texas 2 Trop. N. and S. America Almost cosmopolite 9 The whole region

Almost cosmopolite 1 Trop. S. America, E. of Andes 2 Mexico to Paraguay

9 Mexico to Patagonia

Almost cosmopolite
1 Veragua to Amazonia
7 Mexico to Bolivia and La Plata S.E. United States
1 Brazil and Guiana
1 Columbia and Guiana
12 Mexico to Brazil and Bolivia
1 Veragua to Chili & N. Patagonia
1 Panama to Amazonia

Mexico to Bolivia and Paraguay
1 Bogota

1 Guatemala to Brazil
4 Mexico to Paraguay

Africa, India, Malaya
1 S. Mexico to Bolivia & Paraguay
1 Mexico to Brazil

S. United States
3 Antilles to Brazil and Peru Florida
4 Central America to S. Brazil and

1 Mexico to Chili

Califor., Old World trop.
1 Trinidad to Brazil
3 Central America to Brazil & Peru
2 Mexico to Brazil

South United States 1 La Plata 3 The whole region

Almost cosmopolite 3 The whole region

Almost cosmopolite

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670. Glaucidium
671. Micrathene
672. Pholeoptynx
673. Bubo

6 The whole region
1 Mexico
1 The whole region
i The whole region

W. United Sts., Palæarc.
Arizona, New Mexico
N.W. America & Texas
All regions but Austral.

Order, Family, and


Range beyond the Region.

Almost cosmopolite

All regions but Austral.

674. Scops 675. Gymnoglaux . 676. Lophostrix 677. Syrnium... 678. Ciccaba 679. Nyctalatinus 680. Pulsatriz 681. Asio 682. Nyctalops 683. Pseudoscops

(Nyctale... 684. Strix

All regions but Austral

N. Temperate genus Almost cosmopolite

Peculiar or very Characteristic Genera of Wading and Swimming Birds.








Chionis ..

Kerguelen's Island


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W. coast of N. America

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No, of

Range within the Region.

6 Mexico to Brazil and La Plata 2 West India Islands 2 Guatemala to lower Amazon 3 Mexico to Patagonia 10 Mexico to Peru and Paraguay 1 Columbia 2 Guatemala to Brazil and Peru 2 The whole region 1 Cuba and Mexico to Brazil 1 Jamaica 1 Mexico) 2 The whole region

23 The whole region 1 Tropical America

3 The whole region

2 Sts. of Magellan, Falkland Ids.

4 Andes to Fuegia and Falkland

2 Peru, Chili, and La Plata

1 Temperate S. America
1 Temperate S. America
1 Temperate S. America
1 W. coast of S. America

2 S. Brazil and La Plata

5 Mexico and Cuba to Brazil

6 Equatorial S. America

2 Tropical America

Order, Family, and


Range beyond the Region.







Micropterus ...


Aptenodytes STRUTHIONES.


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Antarctic shores Antarctic shores

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No. of Species.

Range within the Region.

3 The whole region
i Tropical S. America

1 Equatorial America
2 Columbia, Brazil, and La Plata

1 Tropical S. America
3 Andes
1 Temperate S. America

6 Temperate S. America
2 Falkland Islands

3 S. Temperate America



This region consists almost wholly of Temperate North America as defined by physical geographers. In area it is about equal to the Neotropical region. It possesses a vast mountain range traversing its entire length from north to south, comparable with, and in fact a continuation of, the Andes, and a smaller range near the east coast, equally comparable with the mountains of Brazil and Guiana. These mountains supply its great riversystem of the Mississippi, second only to that of the Amazon; and in its vast group of fresh-water lakes or inland seas, it possesses a feature unmatched by any other region, except perhaps by the Ethiopian. It possesses every variety of climate between arctic and tropical; extensive forests and vast prairies; a greatly varied surface and a rich and beautiful flora. But these great advantages are somewhat neutralized by other physical features. It extends far towards the north, and there it reaches its greatest width; while in its southern and warmest portion it suddenly narrows. The northern mass of land causes its isothermal lines to bend southwards; and its winter temperature especially, is far lower than at corresponding latitudes in Europe. This diminishes the available area for supporting animal life; the amount and character of which must be, to a great extent, determined by the nature of the least favourable part of the year. Again, owing to the position of its mountain ranges and the direction of prevalent winds, a large extent of its interior, east of the Rocky Mountains, is bare and arid, and often almost desert; while the most favoured districts,-those east of

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