FIGURE 1 in A new polydesmid milliped genus and two new species from Oregon and Washington, U. S. A., with a review of Bidentogon Buckett and Gardner, 1968, and a summary of the family in Western North America (Polydesmida: Polydesmidae)

FIGURE 1. Occurrence of the Polydesmidae in western North America; 1, Scytonotus; 2, Calianotus; 3, Utadesmus; 4, Speodesmus; 5, Bidentogon; 6, Retrorsia.