Taxa included

Chamberlin, J.C. (1929a). A synoptic classification of the false scorpions or chela-spinners, with a report on a cosmopolitan collection of the same. Part 1. The Heterosphyronida (Chthoniidae) (Arachnida-Chelonethida). Annals and Magazine of Natural History (10) 4: 50–80.

Taxon
Pseudoscorpiones de Geer, 1778 56, (as Chelonethida), Chelonethi
Chthoniidae Daday, 1889 (Pseudoscorpiones) 56, Chthoniidae Daday
Pseudoscorpiones de Geer, 1778 57, Heterosphyronida
Verrucaditha spinosa (Banks, 1893) (Pseudoscorpiones: Chthoniidae) 59, figs 1c, 2h, Verrucaditha spinosa (Banks)
Verrucaditha megaloptera Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) 59–60, Verrucaditha megaloptera
Verrucaditha Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) 59, Verrucaditha
Heterolophus Tömösváry, 1884 (Pseudoscorpiones: Chthoniidae) 60, Heterolophus
Megathis Stecker, 1875 (Pseudoscorpiones: Incertae sedis) 60, Megathis
Ditha Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) 61, Ditha
Ditha (Ditha) philippinensis Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) 61, fig. 1b, Ditha philippinensis
Ditha (Ditha) elegans Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) 61, Ditha elegans
Tridenchthonius cubanus (Chamberlin, 1929) (Pseudoscorpiones: Chthoniidae) 61–62, figs 1h, 2e, 2j, 2l, 3b, Ditha cubana
Chthoniidae Daday, 1889 (Pseudoscorpiones) 62–63, Chthoniinae
Compsaditha pygmaea Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) 62, Compsaditha pygmaea
Compsaditha Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) 62, Compsaditha
Maorichthonius Chamberlin, 1925 (Pseudoscorpiones: Chthoniidae) 64, Maorichthonius
Mundochthonius Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) 64, Mundochthonius
Mundochthonius erosidens Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) 64, Mundochthonius erosidens
Chthonius halberti Kew, 1916 (Pseudoscorpiones: Chthoniidae) 65–66, Kewochthonius halberti (Kew)
Mundochthonius montanus Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) 65, Mundochthonius montanus
Mundochthonius magnus Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) 65, fig. 2b, Mundochthonius magnus
Kewochthonius Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) 65, Kewochthonius
Neochthonius stanfordianus Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) 66, Neochthonius stanfordianus
Neochthonius Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) 66, Neochthonius
Apochthonius Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) 66–67, Apochthonius
Chthonius paludis (Chamberlin, 1929) (Pseudoscorpiones: Chthoniidae) 66, figs 1d, 2i, Neochthonius paludis
Apochthonius occidentalis Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) 67–68, Apochthonius occidentalis
Apochthonius moestus (Banks, 1891) (Pseudoscorpiones: Chthoniidae) 67, figs 2c, 3g (in part), Apochthonius moestus (Banks)
Apochthonius moestus (Banks, 1891) (Pseudoscorpiones: Chthoniidae) 67, (in part) (misidentification; true identification unknown), Apochthonius moestus (Banks)
Selachochthonius Chamberlin, 1929 (Pseudoscorpiones: Pseudotyrannochthoniidae) 68, Selachochthonius
Selachochthonius serratidentatus (Ellingsen, 1912) (Pseudoscorpiones: Pseudotyrannochthoniidae) 68, Selachochthonius serratidentatus (Ellingsen)
Austrochthonius Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) 68, Austrochthonius
Austrochthonius chilensis (Chamberlin, 1923) (Pseudoscorpiones: Chthoniidae) 68, Austrochthonius chilensis (Chamberlin)
Pseudochthonius Balzan, 1892 (Pseudoscorpiones: Chthoniidae) 69, Pseudochthonius Balzan
Chthonius C.L. Koch, 1843 (Pseudoscorpiones: Chthoniidae) 69, Chthonius
Pseudochthonius simoni (Balzan, 1892) (Pseudoscorpiones: Chthoniidae) 69, Pseudochthonius simoni (Balzan)
Chthonius orthodactylus (Leach, 1817) (Pseudoscorpiones: Chthoniidae) 71, Chthonius orthodactylus (Leach)
Chthonius ischnocheles (Hermann, 1804) (Pseudoscorpiones: Chthoniidae) 71–72, figs 2a, 2g, 2k, 2m-n, 3a, 3d, Chthonius ischnocheles (Hermann)
Ephippiochthonius tetrachelatus (Preyssler, 1790) (Pseudoscorpiones: Chthoniidae) 72–73, figs 1a, 1e-f, 3e, Chthonius tetrachelatus (Preyssler)
Ephippiochthonius virginicus (Chamberlin, 1929) (Pseudoscorpiones: Chthoniidae) 73–74, Chthonius virginicus
Tyrannochthonius Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) 74, Tyrannochthonius
Hesperochthonius californicus (Chamberlin, 1929) (Pseudoscorpiones: Chthoniidae) 74, Chthonius californicus
Tyrannochthonius terribilis (With, 1906) (Pseudoscorpiones: Chthoniidae) 75, Tyrannochthonius terribilis (With)
Paraliochthonius johnstoni (Chamberlin, 1923) (Pseudoscorpiones: Chthoniidae) 75, figs 2d, 2f, Tyrannochthonius johnstoni (Chamberlin)
Lagynochthonius johni (Redikorzev, 1922) (Pseudoscorpiones: Chthoniidae) 75, Tyrannochthonius johni (Redikorzev)
Lagynochthonius bakeri (Chamberlin, 1929) (Pseudoscorpiones: Chthoniidae) 75–76, Tyrannochthonius bakeri
Tyrannochthonius grimmeti Chamberlin, 1929 (Pseudoscorpiones: Chthoniidae) 76, Tyrannochthonius grimmeti
Chthoniidae Daday, 1889 (Pseudoscorpiones) 76, (as Lechytini [sic]), Lechytiini
Lechytia chthoniiformis (Balzan, 1887) (Pseudoscorpiones: Chthoniidae) 77, Lechytia chthoniiformis (Balzan)
Lechytia hoffi Muchmore, 1975 (Pseudoscorpiones: Chthoniidae) 77, figs 1g, 3c, 3f (misidentification), Lechytia pacifica (Banks)
Mundochthonius pacificus (Banks, 1893) (Pseudoscorpiones: Chthoniidae) 77, figs 1g, 3c, 3f (misidentification; see Lechytia hoffi), Lechytia pacifica (Banks)
Lechytia Balzan, 1892 (Pseudoscorpiones: Chthoniidae) 77, Lechytia
Pseudoscorpiones de Geer, 1778 78, Monosphyronida
Pseudoscorpiones de Geer, 1778 78, Diplosphyronida
Pseudoscorpiones de Geer, 1778 78, Homosphyronida