Taxa included

Comstock, J.H. (1913). The spider book. Doubleday, Page and Co., New York.

Taxon
Schizomus cambridgei (Thorell, 1889) (Schizomida: Hubbardiidae) n/a, fig. 15, Trithyreus cambridgei (Thorell)
Palpigradi Thorell, 1888 13–15, Microthelyphonida
Eukoenenia florenciae (Rucker, 1903) (Palpigradi: Eukoeneniidae) 15, Koenenia florenciae
Prokoenenia wheeleri (Rucker, 1901) (Palpigradi: Prokoeneniidae) 15, Koenenia wheeleri
Koeneniidae Grassi and Calundruccio, 1885 (Palpigradi) 15, Koeneniidae
Schizonotoidae Thorell, 1888 (Schizomida) 17–18, Schizonotidae
Hubbardia pentapeltis Cook, 1899 (Schizomida: Hubbardiidae) 18, figs 16a–c, Trithyreus pentapeltis (Cook)
Thelyphonidae Blanchard, 1852 (Uropygi) 18–19, Thelyphonidae
Tarantulidae Leach, 1814 (Amblypygi) 19–21, Tarantulidae
Mastigoproctus giganteus (Lucas, 1835) (Uropygi: Thelyphonidae) 19, fig. 14, Mastigoproctus giganteus (Lucas)
Mastigoproctus tohono Barrales-Alcalá, Francke and Prendini, 2018 (Uropygi: Thelyphonidae) 19, fig. 14, Mastigoproctus giganteus (Lucas)
Phrynus whitei Gervais, 1842 (Amblypygi: Phrynidae) 20, Phrynus whitei Gervais
Acanthophrynus Kraepelin, 1899 (Amblypygi: Phrynidae) 20, Acanthophrynus Kraepelin
Acanthophrynus coronatus (Butler, 1873) (Amblypygi: Phrynidae) 20, Acanthophrynus coronatus (Butler)
Phrynus fuscimanus C.L. Koch, 1847 (Amblypygi: Phrynidae) 20, (as Tarantula fusimana [sic]), Tarantula fuscimana (C.L. Koch)
Phrynus palmatum Herbst, 1797 (Amblypygi: Phrynidae) 20, fig. 19, Tarantula palmata (Herbst)
Tarantula Fabricius, 1793 (Amblypygi: Phrynidae) 20, Tarantula
Phrynus marginemaculatus C.L. Koch, 1840 (Amblypygi: Phrynidae) 21, figs. 18, 20, Tarantula marginemaculata (C.L. Koch)
Solifugae Sundevall, 1833 32–36, (as Solpugida), Solifugae
Eremobates Banks, 1900 (Solifugae: Eremobatidae) 36, Eremobates
Eremobates sulfureus (Simon, 1879) (Solifugae: Eremobatidae) 36, (as Eremobates sulphureus [sic]), Eremobates sulfureus (Simon)
Eremobates pallipes (Say, 1823) (Solifugae: Eremobatidae) 37, Eremobates pallipes (Say)
Eremobates putnamii (Banks, 1898) (Solifugae: Eremobatidae) 37, (as Eremobates putnami), Eremobates putnamii (Banks)
Eremorhax magnus (Hancock, 1888) (Solifugae: Eremobatidae) 37, (as Eremobates magna [sic]), Eremobates magnus (Hancock) (Hancock)
Eremobates californicus (Simon, 1879) (Solifugae: Eremobatidae) 37, (as Eremobates californica [sic]), Eremobates californicus (Simon)
Eremobates formicarius (C.L. Koch, 1842) (Solifugae: Eremobatidae) 37, Gluvia formicaria
Eremocosta formidabilis (Simon, 1879) (Solifugae: Eremobatidae) 37, Eremobates formidabilis (Simon)
Hemerotrecha Banks, 1903 (Solifugae: Eremobatidae) 37–38, Hemerotrecha
Datames cinerea Putnam, 1883 (Solifugae: Eremobatidae) 37, fig. 33, Eremobates cinereus (Putnam)
Ammotrechella cubae (Lucas, 1835) (Solifugae: Ammotrechidae) 38, fig. 40, Ammotrecha cubae (Lucas)
Ammotrechula peninsulana (Banks, 1898) (Solifugae: Ammotrechidae) 38, Ammotrecha peninsulana (Banks)
Hemerotrecha californica (Banks, 1899) (Solifugae: Eremobatidae) 38, Ammotrecha californica (Banks)
Ammotrecha Banks, 1900 (Solifugae: Ammotrechidae) 38, Ammotrecha
Hemerotrecha californica Banks, 1903 (Solifugae: Eremobatidae) 38, [junior secondary homonym of Cleobis californica Banks, 1899], Hemerotrecha californica
Pseudoscorpiones de Geer, 1778 39–44, (as Pseudoscorpionida), Pseudoscorpiones de Geer
Cheliferidae Risso, 1827 (Pseudoscorpiones) 45, Cheliferidae
Obisiidae Sundevall, 1833 (Pseudoscorpiones) 51, Obisiidae