264 
FLORA OF THE SUNDRIBUNS. 
as many as 12 per cent, are distributed to the westward of the 
Sundribuns only. Every thing therefore indicates that the species 
introduced by human agency have come from the north and west. 
The species possibly introduced by water-birds are 30 in number, 
distributed as follows 
Both westward and eastward • , . 
Cosmopolitan in the Tropics • 
Tropics of Eastern Hemisphere and Australia 
Tropics of Eastern Hemisphere . 
South-Eastern Asia> Australia, America 
South-Eastern Asia, Australia . 
South-Eastern Asia, Europe 
South-Eastern Asia . • , 
Australia, Europe . , 
India, Indo-China • . . • 
Westward only 
India, Africa 
India 
The high percentage of cosmopolitan species brings plants of this group 
almost on a parallel with the introduced weeds. Here again none 
of the species are distributed to the eastward only ; the species dis- 
tributed to the westward only constitute 10 per cent, of the whole ; 
it may therefore be concluded that these bird-introduced species, like 
the species introduced by man, are immigrants from the north. 
When the 23 species, for which dispersal by fruit-eating birds 
is almost certain, are considered, we find a great contrast in their 
distribution since none of them are cosmopolitan, and more than half of 
them are confined to South-Eastern Asia (India, Indo-China, Malaya). 
The details are : — 
Distributed both westward and eastward 
To Africa and throughout South-Eastern Asia . 3 
Throughout South-Eastern Asia and to Australia. 5 
Throughout South-Eastern Asia and to New 
Caledonia ....... i 
Throughout South-Eastern Asia . . .-8 
Throughout India and Indo-China • . * 4 
31 
Distributed westward only (Loranthus longiflorus) . . i 
Distributed eastward only ; to Eastern Bengal north 
of the Sundribuns, and to Assam {Loranthus 
Scurrula var.) . . . • ' . . , , i 
If one may judge by the predominance of species that pass beyond 
South-Eastern Asia to Northern Australia and New Caledonia, over 
those that extend beyond South-Eastern Asia to Africa, we can 
