Abstract
Large populations of the snipe fly, S. hirta, were noted in southwest Montana during the summer of 1943, especially in the upper reaches and the tributaries of the Gallatin River. The first flies were noted July 10th. They were extremely abundant at least from the 24th to the 27th. Numbers were greatly reduced by Aug. 7, and not in evidence by the 19th. Attacks on humans and the larger game animals were noted, and the possibility of their transmitting such diseases as tularemia mentioned. The flies reacted somewhat unfavorably to oil of citronella and tobacco smoke.

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