CHAr. XII.] THE ORIENTAL REGION. 343 



number of species collected by mjselt" 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 Pdiyncophora. 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 montlis 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 month, I obtained onl}'" 235 species of 

 Coleoptera, and about GOO 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 

 ()0 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 niet 

 with been collected, not much more than 100 species would ever 

 have been olitained 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 Cicindelidte the most peculiarly Malayan form is Thcraics, 

 found always on leaves in the forests in the same localities as 

 the more widely spread Col/i/ris. Five genera of this family arc 

 In do-Malayan. 



The Carabidie, 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 Mormolijce, the largest 

 and most remarkable of the whole family. It is nocturnal, 

 resting during the days on the imder side of large huldi in the 

 virgin forest. Pcrica/lns and Catascopus are among the few 

 genera which are at all brillantly coloured. 



Buprestidre are almndant, and very gay ; the genus Brlionola 

 being perhaps one of the most conspicuous and characteristic. 

 The giant Catoxantlia is, however, the most peculiar, though 

 comparatively scarce. Clirtjwelnx'a and Chjibopliord are also 



