During May, 1935, C. F. Doucette collected a few adult weevils on flower heads of mustard growing at the edge of a bulb field near Lynden. Wash. These weevils were recognized by the writer as apparently different from any of the species listed from North America, and a trip was made to Lynden on June 1, 1935, to obtain additional specimens. Specimens were also collected on mustard close to the northern limits of Bellingham, at two points between there and Lynden, north of Lynden, and in the vicinity of Nooksack, all in Watcom County. On the following day two specimens were collected on mustard at Big Lake, Skagit County. Big Lake is practically in the seed-growing section of the county, where a large portion of the cabbage seed used in the United States is produced. Weevils were determined by L. L. Buchanan as Ceutorhynchus assilmilis Paykull, and Mr. Buchanan stated that this species had not previously been reported from North America and that it appeared to be of considerable economic importance in Europe.

The present article is based on a study of the collection of fleas belonging toProf. G. J. Spencer, of the University of British Columbia, Vancouver, B. C., and of the collections made by the late Mr. Eric Hearle of the Dominion Entomological Laboratory, Kamloops, B. C. It is an agreeable duty to me to express my most sincere gratitude to Prof. G. J. Spencer as well as to Dr. Arthur Gibson, Dominion Entomologist, and Dr. J. McDunnough, Chief ofthe Division ot Systematic Entomology, Entomological Branch, Department of Agriculture, Ottawa, Ont., for havingafforded me the opportunity of becoming more closely acquainted with the aphanipterological fauna of British Columbia. It was especially interesting to me as the fauna of this province is largely allied to that of the eastern part of the palaearctic region.

The work of my assistant, Mr. A. N. Gartrell, in southern British Columbia during the season of 1935 has resulted in considerable additions to our knowledge of the genus Ameletus in thisprovince; not only have the nymphs of A. oregonensis McD. and vernalis McD. been tied down, but two new species have been discovered.

It is proposed to deal with these in the present article but before doing SO it might be well to call attention to an error which has crept into Traver's key to the adults (1935, Biology of Mayflies, 447) ; in this key the first caption reads “Several cross-veins in forewing margined with brown, so that wing appears speckled” and under this heading is included as first species validus McD. This is incorrect as the wings of validus are not speckled but lightly and evenly suffused with brownish-amber, and the species, if properly keyed, would fall into caption 6, where it is distinguished from shepardi Trav. apparently by the darker-colored abdominal segments. Similior McD., as second species under caption I, is also wrongly keyed; in this species the wings are practically clear hyaline and the correct keying would lead to caption 13 (alticolus McD.) to which species it is allied but differs in genitalic characters.