AN ANNOTATED LIST OF THE DIPTERA (FLIES) OF ALBERTA: ADDITIONS AND CORRECTIONS
In 1938 a list of 1348 species of Diptera that, at that time, were known to occur in Alberta was published in the Canadian Journal of Research. Upon its appearance, specialists in several different groups in this order offered to re-examine all of the material in the University of Alberta collection that belonged to the families in which they were interested.This re-examination necessitates the replacement of 50 of the names that were recorded in 1938 and the addition of about 300 new records. These, together with the information generously provided by members of the Dominion Division of Entomology regarding unpublished records of species that are not represented in the University collection, brings the total Albertan records of flies to nearly 1900 species. A capture of unusual interest is the 'eye gnat' (Hippelates pusio Lw.), the distribution of which, on this continent, was, supposedly, confined to "the southern United States where the winters are mild".