692 Longicornia Malayana. 



520 Coleoptera) . I collected for about two montlis in 

 Singapore, a week of which was spent at Pulo Ubim, on 

 the northern side of the island, and a poor locality. That the 

 collecting ground was not nearly exhausted is proved by the 

 fact, that on going to the same spot again in 1856, I ob- 

 tained in eighteen days eighteen new species of Longi- 

 corns. My success was due to several favourable circum- 

 stances. The patch of forest I collected in was on tolerably 

 level ground, with a moist soil, the trees very lofty, with 

 tolerably thick undergrowth ; and it had been for some 

 years frequented by Chinese wood-cutters, who had made 

 numerous saw-pits, and had left the branches, and many 

 of the trunks, lying about in every stage of decay. Food 

 was thus furnished for a great variety of insects, and in 

 a little more than two months I was able to collect about 

 700 species of Goleoptera (of which 135 were Longicorns) 

 in a very limited area. 



Sumatra. I spent a little more than two months in 

 Sumatra, but it was the wet season, and I did not reach 

 the finest country for insects in the valleys of the central 

 range of mountains. My collections, therefore, give no 

 adequate idea of the entomology of this great island, 

 which I have every reason to believe is, at least, as pro- 

 ductive of insect life as any other in the Archipelago. 



Java. I spent two months in the Eastern part of 

 Java (July to September, 1861), when it was excessively 

 hot and dry, and scarcely any insects were to be found, 

 and about six weeks in the Western part (September, 

 October) , when it was so exceedingly wet and gloomy as 

 to be equally unfavourable for insect collecting. Under 

 these circumstances, my time was chiefly devoted to 

 birds, and the very few species of Longicorns I obtained 

 must not be held to indicate any poverty in this luxuriant 

 island, which, I believe, still oifers a fine field to an 

 energetic collector. 



Borneo. I spent nearly fifteen months in Sarawak, 

 but as I arrived at the beginning of the rainy season, 

 the first six were very unproductive in insects, as were 

 also the last four, which were spent in short voyages, or 

 at the town of Sarawak. Almost all my insect collections 

 were made at Simunjon, where some coal mines were 

 being opened, and about fifty Chinamen and Dyaks were 

 kept at work clearing forests, making roads, building 

 houses, &c. I reached this spot on the 14th of April, 



