It Is
Found All Over Celebes And In The Sula Islands, And Also In
Bourn, The Only Spot Beyond The
Celebes group to which it
extends; and which island also shows some affinity to the Sula
islands in its birds,
Indicating perhaps, a closer connection
between them at some former period than now exists.
The other terrestrial mammals of Celebes are five species of
squirrels, which are all distinct from those of Java and Borneo,
and mark the furthest eastward range of the genus in the tropics;
and two of Eastern opossums (Cuscus), which are different from
those of the Moluccas, and mark the furthest westward extension
of this genus and of the Marsupial order. Thus we see that the
Mammalia of Celebes are no less individual and remarkable than
the birds, since three of the largest and most interesting
species have no near allies in surrounding countries, but seem
vaguely to indicate a relation to the African continent.
Many groups of insects appear to be especially subject to local
influences, their forms and colours changing with each change of
conditions, or even with a change of locality where the
conditions seem almost identical. We should therefore anticipate
that the individuality manifested in the higher animals would be
still more prominent in these creatures with less stable
organisms. On the other hand, however, we have to consider that
the dispersion and migration of insects is much more easily
effected than that of mammals or even of birds. They are much
more likely to be carried away by violent winds; their eggs may
be carried on leaves either by storms of wind or by floating
trees, and their larvae and pupae, often buried in trunks of
trees or enclosed in waterproof cocoons, may be floated for days
or weeks uninjured over the ocean.
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