Injury to young jack pine in an experimental plantation at Cloquet, Minn., by a shoot boring insect, Eucosma sonomana Kearfott, stimulated the investigacions on life history, biology and incidence reported here. Notes on life history, biolop and injury are included for two additional species of the subfamily Eucosminae, family Olethreutidae; namely Petrova albicapitana Busck, and Petrova pallipennis McDunnough.

In the course of some studies on chemical control of pests of legume crops it has become desirable to mark honey bees at the hive and, if possible, at the flower. Considerable success has been achieved by the use of the compound fluorescein. It has been found that bees can be dusted with small quantities of fluorescein and that the presence of the material can subsequently be detected by means of a Coleman photofluorometer and by eye. It seems likely that quantitative measurements could be made with a photofluorometer.

Pleurotropis utahensis Crawford was first reported as a parasite of the wheat stem sawfly, Cephus cinctus Nort., by Crawford (2) prior to 1913. It has been recorded by Crawford (2) from Kimball and Salt Lake City, Utah; by Ainslie (1) from North Dakota; and by Gahan (5) from Missoula, Montana. It is one of several parasites of the wheat stem sawfly in the Prairie Provinces of Canada, where it has been recorded (7) (8) as far west as Sylvan Lake, Alberta. Criddle (3) (4), and in his original notes, records it from as far east as Boissevain, Manitoba. During the present study this parasite has been collected from sufficient locations that one might assume that it occurs throughout the area where wheat stem sawfly is found (6) in Alberta, Saskatchewan, and Manitoba.

Incisalia hadros Cook and Watson, and Incisalia Henrici, G. & R., new variety, solatus Cook and Watson, were described in The Canadian Entomologist, 1909, volume 41, pages 181-182.

In the description of hadros it was stated that the types (♂ and ♀) and two paratypes (♂ and ♀) would be sent to the United States National Museum. The description of solatus did not mention the disposition of the types.