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THE

GEOGRAPHICAL DISTRIBUTION
OF ANIMALS.

PART ITT. (continued.)
ZOOLOGICAL GEOGRAPHY:

A REVIEW OF THE CHIEF FORMS OP ANIMAL LIFE IN -THE
SEVERAL REGIONS AND SUB-REGIONS, WITH THE INDICA-
TIONS THEY AFFORD OF GEOGRAPHICAL MUTATIONS.

NEOTROPICAL REGION

Scade linch-LOXO miles

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Concepcion
EXPLANATION
Terrestrial Contours

Valdera

Bahía Blanco
From Seu level to 1000 feet White

1000 feet to 2.500
2.500 5.000

Chloete
3,000 10,000

R. Chupat
10,000 30.000
Above 20.000 fert
The Marine Contour of 1,000 feet

* Peñas

P&R Desire
is shewn by a dotted line

5PS Julian
Pasture lands shen this LE
Forest

5. Geargia
Desert

Desolation
The boundaries and reference numbers
of the Sub-regions are shewn in Red

"a del Fuego
100 no 100 0 0 Long: 80 West 70 of 60 Green 50 40 30 20

Slarford's Geographic Estab London

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New York: Harper & Brothers,

CHAPTER XIV.

THE NEOTROPICAL REGION.

This region, comprehending not only South America but Tropical North America and the Antilles, may be compared as to extent with the Ethiopian region; but it is distinguished from all the other great zoological divisions of the globe, by the small proportion of its surface occupied by deserts, by the large proportion of its lowlands, and by the altogether unequalled extent and luxuriance of its tropical forests. It further possesses a grand mountain range, rivalling the Himalayas in altitude and far surpassing them in extent, and which, being wholly situated within the region and running through eighty degrees of latitude, offers a variety of conditions and an extent of mountain slopes, of lofty plateaus and of deep valleys, which no other tropical region can approach. It has a further advantage in a southward prolongation far into the temperate zone, equivalent to a still greater extension of its lofty plateaus; and this has, no doubt, aided the development of the peculiar alpine forms of life which abound in the southern Andes. The climate of this region is exceptionally favourable. Owing to the lofty mountain range situated along its western margin, the moisture-laden trade winds from the Atlantic have free access to the interior. A sufficient proportion of this moisture reaches the higher slopes of the Andes, where its condensation gives rise to innumerable streams, which cut deep ravines and carry down such an amount of sediment, that they have formed the vast plains of the Amazon, of Para

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