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[[strikethrough]] 8 [[/strikethrough]] (5) [[strikethrough]] 43 [[/strikethrough]] CHARLES V. RILEY. The locust or "grasshopper" Outlook. [[underlined]] Scientific American [[/underlined]], 65, September 26, 1891, pp. 200, Summary of investigations carried on by agents of the U. S. Department of Agriculture in 1891, to ascertain the extent of damage done by various species of locusts in the West, and the condition of the swarms of these locusts in order to be able to make a forecast for 1892. The following species are more particularly treated: [[underlined]] Dissosteira lengipennis [[/underlined]] from eastern and southeastern Colorado; [[underlined]] Caloptenus spretus [[/underlined]] from North Dakota and Minnesota; C. differentialis from southwestern Kansas. Conclusions drawn from these investigations.