THE CANADIAN ENTOMOLOGIST. 175 



infested, but sometimes the insect was distributed over an entire 

 field. 



There were no external indications of the presence of the borer 

 in the fields, excepting that infested plants were weakened some- 

 what, and therefore very likely to be broken off by the wind; 

 weakened and diseased plants were found to be infested more 

 frequently than others. In canes which had been broken off by a 

 cyclone, several months previously, when infested, there was some- 

 times a minute discoloured spot indicating the position of a large 

 larva; these canes were infested near their tops and were only about 

 three feet high and bare of leaves. 



All stages of development were present. As a rule, only one 

 or two of the beetles were found hiding in the same place; once four 

 were found together and quite frequently pairs, but these were not 

 mating, though in the mating position. 



The farmers in the Goondi area had combined tolerably well 

 and were using, as stated, the cane baits recommended by the 

 Hawaiian entomologists; at the time, which was just before harvest, 

 it seemed to me that one thorough search of the worst fields by 

 hand, collecting the beetles and then, after harvest, burning the 

 trash, would destroy the majority of those remaining, while che 

 larvae in the cane would be destroyed by the milling process. Mr. 

 Robert Davis, of Darradgee, whom I quote later, brought to me 

 some small pieces of infested cane taken from the remains of the 

 trash on his field which had just been burnt in my presence. From 

 these pieces were obtained three larvae, two pupae and three adults, 

 and all proved to be dead except one pupa; later, the latter died; 

 these specimen were taken from the interior of the pieces of infested 

 cane, the pupae and adults from cocoons. They appeared to have 

 been steamed to death. From Mr. Davis I received the following 

 interesting account: 



"Notes in Connection with Cane Borer Pest. 



"I first discovered Borer in or about April, 1912, in two shoots of 

 cane while cutting cane for plants, after the field had been broken 

 down by a recent cyclone. I made several enquiries about them 

 from older farmers and was told that they were harmless, as they 

 had been present on the (Johnstone) river for years past. 



