In the annual reports of the Canadian Experimental Farms for 1896 and 1897, Dr. James Fletcher describes a new apple-fruit pest in British Columbia, caused by the attacks of small caterpillars, viz., the larvæ of a little tineid moth, Argyresthia conjugella, Zell. The injuries done by this new enemy, called by Mr. Fletcher “the applefruit miner,” closely resemble those caused by the apple maggot, Trypeta pomonella, Walsh. The caterpillars tunnel the pulp of the fruit in every direction, leaving brown-coloured channels with rather large chambers here and there; this attack thus being easily distinguishable from that of the common codling worm.