Looking over one's mail is commonly a routine matter but a procedure that must be attended to if routine is to continue. Now and then, however, the unexpected happens and something that “is different” turns up. And so it was when the January number of the Canadian Entomologist, the Commemorative Number, was delivered.

The streams and lakes of western Montana offer a variety of habitats for species of aquatic insects but heretofore extensive collection and study of these forms has not been undertaken. During the past two years collections of both nymphs and adults have been made on several streams. The Plecoptera in these collections include the undescribed nymphs of Nemoura cinctipes Banks and several species which have not been reported for Montana.

The following dexriptions are based on specimens collected by Mr. E. H. Strickland in Alberta, Canada. All holotypes and allotypes are deposited in the Canadian National Collection at Ottawa, Ontario. Paratypes are in the collection at the University of Alberta, Edmonton, and in the Caldwell collection at Ohio State University, Columbus.

In 1938 (1) we recorded twenty-eight species of Psyllidae which had been captured in Alberta. Of these, twenty-one were taken, for the first time on record, during the summer of 1937. Although psyllids were far less numerous in 1938 than they had been in 1937, it is now possible to add eleven additional records to the list of species which occur in this province. These include three previously undescribed forms all of which are described by Caldwell in an accompanying article. We are indebted to Mr. Caldwell, also, for the determination of the other species here recorded.

For years several specimens of a Papilio form from Alberta, allied to oregonia Edw., have stood apart in the Canadian National Collection. Time and again I have puzzled over them but could never make them fit exactly under any of the existing names. Three of the series (males) came to us with the Wolley-Dod collection and were captured in 1905 in the bad lands of the Red Deer River Valley, somewhere near Drumheller; a fourth specimen (a female) was taken in the same general region in 1917 by C. H. Young.

The possibility of the above synonymy was suggested in a letter from Mr. W. J. Brown of Ottawa. Through the kindness of Dr. K. G. Blair and Mr. J. Balfour-Browne of the British Museum, I have been able to study a male and a female of A. elongatus (Gyllenhal), and to compare them with two male and two female paratypes of A. bryanti Carr.

For several years, as a result of various Insect Faunal Surveys in Nova Scotia, material of an undetermined Epipaschid of the genus Tetralopha has been accumulating in our collection. On a recent visit to Washington I could not match the species with any named material in the United States National Museum; in general appearance it is fairly close to Hulst's unique type of talleolalis but very considerably larger; although of approximately the same size as robustella Zell. it cannot be mistaken for this species on account of the very definitely geminate t. a. line, the paler median space and the clearly cut t. p. line, which latter character would also separate it from militella Zell.

The following notice, signed by Francis Hemming, Secretary to the International Commission on Zoological Nomenclature, has been received under date of June 27, 1939.