Taxa included

Barrows, W.M. (1925). Modification and development of the arachnid palpal claw, with especial reference to spiders. Annals of the Entomological Society of America 18: 483–516.

Taxon
Mastigoproctus giganteus (Lucas, 1835) (Uropygi: Thelyphonidae) 500, figs 34–35, Mastigoproctus giganteus (Lucas)