Taxa included

Packard, A.S. (1888). The cave fauna of North America, with remarks on the anatomy of the brain and origin of the blind species. Memoirs of the National Academy of Sciences 4: 1–156.

Taxon
Chitrella cavicola (Packard, 1884) (Pseudoscorpiones: Syarinidae) 42, fig. 11, Obisium cavicola
Kleptochthonius (Chamberlinochthonius) packardi (Hagen, 1879) (Pseudoscorpiones: Chthoniidae) 43–46, figs 12a–g, plate 11 figs 3, 3a–j (as Chthonius packardii), Chthonius packardi (Hagen)
Chelifer cancroides (Linnaeus, 1758) (Pseudoscorpiones: Cheliferidae) 43, Chelifer cancroides (Linnaeus)
Apochthonius coecus (Packard, 1884) (Pseudoscorpiones: Chthoniidae) 46–48, plate 11 figs 4, 4a–c, Chthonius coecus