For over three years we have had in the collection at Ottawa specimens of a pretty little Yponomeutid moth, which we have been unable to get identified.

Larvæ were first observed by the writer at Aylmer, Que., on May 24th, 1901. They were found feeding on stinging nettle (Urtica gracilis, Ait.). and appeared to be fairly abundant in one locality. Specimens collected on this date spun up within two or three days, and the moths emerged on June 7.