32 SPOLIA ZEYLANICA. 
and south-east, with, perhaps, the sea-borde of the Eastern 
Province as a connecting link. This might be called the 
Jaffnese tract, and would represent the districts in which the 
Carnatic invaders had made good their footing. 
(3) The last division would comprise the drier forest region 
with a rainfall of from 50 to 75 inches. This is the country 
through which the Malabar and Carnatic contingents overlap, 
and might be called the Intermediate tract. 
I would not distribute this tract between the other two, 
but keep it separate, owing to its relatively large area, and 
the fact that, on the whole, the character of its avifauna is 
fairly constant throughout, lacking many of the damp-loving 
‘““ Malabar species ” on the one hand, and of the dry-country 
“Carnatic species ” on the other. 
Until, however, the evidence both geological and zoo- 
geographical is more complete, these divisions and reconstruc- 
tions of the part must be, more or less, a matter of conjecture. 
The collection and examination of that evidence is a task in 
which members of our Society can render useful help, whatever 
branch of Natural History may be their hobby. 
Perhaps some day Government will expand the present 
Mineralogical Survey into a full-blown Geological Survey, and 
thus provide officers, part of whose work will be to make a 
full scientific investigation and to give an authoritative 
pronouncement. Meanwhile I have started an interesting 
hare, and I hope that others will pursue it. 
