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BARNARD S MOTH TRAP. 



who kindly sent me two un painted traps which were put in the same 

 phice, and near the others, so that they would have an equal chance 

 with them. The comparison between the painted and unpainted 

 traps, showed that the unpainted traps collected quite as many insects 

 as those that were painted, and therefore the painting is a needless 

 expense. 



The traps were hung out April 21, and the insects collected from 

 them each day and determined. This was continued until Sept. 15, 

 when the work was closed up. It was not easy to make specific 

 determinations of the insects that had been soaked in the liquid in 

 the traps, but they were determined as accurately as possible with 

 the following results : Beetles, 680 specimens ; wasps and bumble- 

 bees, 1024 specimens ; butterflies and moths, 17,590 specimens ; flies 

 of various kinds, 59,376 specimens. A few plum curculios were 

 taken, but the greater number of the beetles were Ips fasciatus which 

 is a species said to be injurious. There were but a few butterflies 

 and sphinx-moths, and only one tent caterpillar moth, which was 

 undoubtedly an accidental capture. These traps attract only such 



