APPENDIX. 
85 
shows a close relationship to that of Borneo. These 
144 species are distributed over 30 different genera, 
of which only 3 ( Polycestoidcs , Aprosopus and Exagistus) 
are confined to Borneo. This large proportion of species 
peculiar to Borneo emphasizes the distinctive character 
of its insect fauna, although we must expect future 
discoveries in other countries to reduce this large 
number. On the other hand further collecting in 
Borneo will undoubtedly produce yet more new species. 
Of the remaining 82 species no less than 55 are 
found in Sumatra, of which 33 are peculiar to Borneo 
and Sumatra. Only 22 are recorded from the Malay 
Peninsula of which 2 reach the Indian region, while 
3 more, not recorded in the Malay Peninsula, are found 
in India. In comparison with statistics to hand on 
other branches of the Insect Fauna of this region, 
these last numbers are surprisingly small, and there 
can be little doubt that many more ‘‘Bornean” species of 
Buprestidae await capture and recording on the 
Indo-Malayan continent. The small number of 21 
species found in Java coincides with previous figures, 
which all point to a much more distant relationship 
between Borneo and Java. As has often been stated 
before, all these islands once formed part of the Asiatic 
continent; Java was the first to become separated, followed 
at a later period by Borneo and Sumatra. 
Only 3 species are recorded from the Philippines and 
2 from Celebes. We may perhaps expect a small 
increase in these numbers from future discoveries. 
Sarawak, 
December , 1911 . 
J. C. Moulton. 
