BioStor
 | Synopsis of the Silphidae of the United States, with reference to the genera of other countries (1880) Transactions of The American Entomological Society 8: 219-321 |
 | Coleopteren aus Circassien, gesammelt von Hans LEDER im Jahre 1887. III. Theil Edmund Reitter (1888) Wiener Entomologische Zeitung 7: 143-156 |