September 23, 1935, the writer exaimined the wharf of the Atlantic Sugar Refineries Limited at Saint John, N.B., which was under reconstruction owing to “decay” of the timbers. The officials of the company had discovered that these timbers had been riddled by borers which proved to be the larvae of an oedemerid beetle, Nacerda melanura L. As the references to this insect in the literature are scant and there is uncertainty as to its economic importance, the following notes are presented.

While stationed at the Dominion Biological Laboratory at Cultus Lake, B. C., and conducting investigations on the sockeye salmon, Dr. W. E. Ricker spent some of his leisure time in collecting certain groups of aquatic insects and has generously presented the bulk of the material to the Royal Ontario Museum of Zoology. The Odonata, which were kindly sent to the writer, were collected in a most discriminating manner and include some interesting species hitherto unknown to the region. One new species, a Macromia, is described herewith, while the collection as a whole will be reported upon in a future paper.

While rearranging our North American species of the genus Erebia in accordance with the recently published Monograph of the genus by B. C. S. Warren (1936) I was struck by the fact that in several instances our Canadian species had, especially as regards their areas of distribution, been treated in a rather superficial manner and with less of the thoroughness which marks the treatment of the balance of the species. This was probably due both to lack of material for study and of published distributional data; I offer therefore the following notes, based on the material in the Canadian National Collection, with a view to supplementing Warren's monumental work. The arrangement of species is that of the Monograph.

In collections of American beetles, we find, at present, only one recognized species of Xylita, namely laevigata, which occurs both in Europe and America. Mr. H. C. Fall recently called to my attention the fact that the specimens so named were not all alike. Upon examination it is found that in many cases two species have been grouped under this head, the true Xylita laevigata Hellenius and another which apparently is identical with the European Xylita livida Sahlbg. An examination and comparison of our form with specimens from abroad show no differences. A series of thirty-four beetles received from Mr. Ralph Hopping all proved to be Xylita livida.