CHAr. XII.] 
THE ORIENTAL REGION 
343 
number of species collected by myself in some of the best 
localities. At Singapore 300 species of Coleoptera were col- 
lected in 15 days, and in a month the number had increased to 
520 ; of which 100 were Longicorns and 140 Rhyncophora. At 
Sarawak in Borneo I obtained 400 species in 15 days, and 
600 in a month. In two months this number had increased to 
about 850, and in three months to 1,000 species. This was the 
most prolific spot I ever collected in, especially for Longicorns 
which formed about one-fifth of all the species of beetles. In 
the Aru Islands in one mouth, I obtained only 235 species of 
Coleoptera, and about 600 species of insects of all orders ; and 
this may be taken as a fair average, in localities where no 
specially favourable conditions existed. On the average 40 to 
60 species of Coleoptera would be a good day’s collecting; 70 
exceptionally good ; while the largest number ever obtained in 
one day was 95, and the majority of these would be very 
minute insects. It must be remembered, however, that many 
very common species were passed over, yet had every species met 
with been collected, not much more than 100 species would ever 
have been obtained in one day’s collecting of four or five hours. 
These details may afford an interesting standard of comparison 
for collectors in other parts of the world. 
Of Cicindelidae the most peculiarly Malayan form is Tkerates, 
found always on leaves in the forests in the same localities as 
the more widely spread Collyris. Five genera of this family are 
Indo-Malayan. 
The Carabkke, though sufficiently plentiful, are mostly of small 
size, and not conspicuous in any way. But there is one striking 
exception in the purely Malayan genus Mormolyce , the largest 
and most remarkable of the whole family. It is nocturnal, 
resting during the days on the under side of large boleti in the 
virgin forest. Periccdlus and Gatascopiis are among the few 
genera which are at all briilantly coloured. 
Buprestidre are abundant, and very gay ; the genus Belionoia 
being perhaps one of the most conspicuous and characteristic. 
The giant Catoxaniha is, however, the most peculiar, though 
comparatively scarce. Chrysochroa and Chalcophora are also 
