LIFE-HISTORY OF TRICONDYLA AND COLLYRIS. 



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Mr. H. E. Andrewes has kindly sent me a letter, received from 

 Mr. H. Leslie Andrewes, which throws further interesting light 

 on the life-history of Collyru • he writes as follows: — "I was 

 pruning some 4-year old tea, and, when cutting through a branch 

 about two years old, I went through the fore portion of the 

 abdomen of a Collyris sp. ? (imago), and the front part wriggled 

 out of the hole and dropped on the ground. The branch was 

 about five-eighths of an inch thick. There was an external hole 

 (presumably for getting rid of excrement) at an angle of about 

 120° witb the burrow in which the beetle was. It w as stopped 

 up with blackish excrement. There was a very little powdered 

 stuff in one end of the hole which had evidently been a 

 pupal envelope of some kind, presumably that of the Colly ris." 

 Mr. Andrewes does not think that the beetle could possibly have 

 got into the branch for predatory purposes, and, as far as he 

 could judge, it had lived in the boring from the egg-stage. 



The occurrence of Collyris in both tea and coffee shrubs is very 

 interesting, and may ultimately prove to be of economic importance 

 — whether for good or for evil seems a matter of doubt ; on the 

 one hand the borings, if numerous, must, apparently, injure the 

 trees, while, on the other hand, large numbers of injurious insects 

 must be destroyed by the voracious larvae. 



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