Scudder, S. H. 1895. Contribution to Canadian Palaeontology, Vol. 2 Part I. Canadian fossil insects myriapods and arachnids. 2. The Coleoptera hitherto found fossil in Canada. 4. Addition to the Coleopterous fauna of the interglacial clays of the Toronto district. With an appendix by A. D. Hopkins on scolytid borings from the same deposits. United States Geological Survey 1895:67-69.