The best way to “remember” some rare butterfly or other insect type which you may examiine in a distant collection is to possess a good upper and under side photograph of it. Clearly taken pictures never deceive and they make later identification relatively simple. It costs time and money to travel around the country and inspect types in the various museums and for this reason it is well to “bring home” at the time a lasting reference, especially if the procedure of taking the pictures is easy and inexpensively worth while. Nowadays any entomological specialist of repute must know what neighboring names stand for before he can apply new ones and for this reason, and in order to write strictly modern descriptions of comparative nature, a photograph of related objects is the best mental guide to have in lieu of actual specimens.

Sometime ago while experimenting on ways and means of making butterfly wing-prints I discovered a process which I believe to be new and simpler than any yet devised. Several methods have been used in the past, notably by Denton in his butterfly and moth books. One of the chief methods and one which has been described in several places is that of coating a matt surface paper with a solution of gum arabic and pressing the butterfly or moth wing upon this surface under a screw press. After being allowed to harden the paper with the wing adhering is removed from the press and the wing stripped off leaving the scales sticking to the gum-coated surface of the paper.

In the routine work of sorting and determining Aquatic Hemiptera from the western United States, I was quite surprised recently to discover two new species in genera which I supposed were fully known. In a lot consisting of 110 Ranatra tahen by Doctor R. H. Beamer and his parties on the Biological Survey trips into the southwestern United States during the last two or three years I found one specimen of a very distinct and new species.

Eurycaenis. Three male adults of this genus were taken swarming at the edge of a small lake at Daventry, Ont. early in the morning of September 5, 1929. These specimens have the characters set forth by Ulmer in his key to the genera of mayflies (Stettiner Entomologische Zeitung. 81. 1920). namely “Prosternum very broad, twice as broad as long, so that the coxae of the forelegs are widely separated: second antennal segment three times as long as the first segment.” In Caenis the second antennal segment is less than three times the length of the first segment and the prosternum is longer than wide.

It was my privilege to spend the summer of 1929 collecting insects on the north shore of the Gulf oi the St. Lawrence. This insect survey extended from Trinity Bay in the west to Bradore Bay in the Straits of Belle Isle. Particular attention was given to Coleoptera. Except where otherwise stated, the author is responsible for the determinations in the following list.