Proceedings of the American Philosophical Society, Held a...
Society, American Philosophical Excerpt from Proceedings of the American Philosophical Society, Held at Philadelphia for Promoting Useful Knowledge, Vol. 36: January to December, 1897In a memoir to be published by the United States National Museum I have described in detail all the species of Melanoplus known to me, whether new or old. As, however, some delay has occurred in the printing of that paper, I am permitted to give here a table for the determination of all the spec...