Abstract
Through the kindness of Professor Gilbert van Ingen, of the Department of Geology of Princeton University, I have been allowed to study the collection of Florissant fossil beetles in his care. The series is of particular interest since it forms a part of the material used by Scudder in working up two of his principal papers on the Tertiary insects* and contains many of his types and cotypes. He studied the present collection with special reference to the Adephaga, Clavicornia and Rhynchophora and in these groups described practically all of the novelties which were in sufficiently good condition for that purpose. With the exception of Ataenius patescens , for the determination of which I am responsible, all of the species attributed to his authorship in the following list were identified by him and the specimens represent the originals which served as the bases of his descriptions. Those attributed to myself are either lately published or now in press elsewhere. Ten are described as new. The drawings are made with a camera lucida and represent only what actually remains of the specimens, there being no attempt to restore lost parts or to idealize any of the characters. *Monographs of the United States Geological Survey, Vols. XXI and XL.
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