Cook, O.F. (1895). "Introductory note on the families of Diplopoda". In Cook, O.F.; Collins, G.N. (eds.). The Craspedosomatidae of North America. Annals of the New York Academy of Sciences. Vol. 9. New York: New York Academy of Sciences. pp. 1–9 [5].
Brölemann, H.-W. (1902). "Myriapodes Cavericoles". Annales de la Société Entomologique de France (in French). 71: 448–460 – via Biodiversity Heritage Library.