Published in Entomologische Nachrichten. Berlin, in 1891, in volume 17, pages 17-26
Published in Entomologische Nachrichten. Berlin, in 1891, in volume 17, pages 55-58
Published in Entomologische Nachrichten Berlin, in 1891, in volume 17, pages 97-107
Published in Entomologische Nachrichten. Berlin, in 1891, in volume 17, pages 313-316
Published in Entomologische Nachrichten, Berlin, in 1891, in volume 17, pages 326-333