Ewing, H.E. (1929). A synopsis of the American arachnids of the primitive order Ricinulei. Annals of the Entomological Society of America 22: 583–600.
| Taxon | |
|---|---|
| Ricinoididae Ewing, 1929 (Ricinulei) | 586, Ricinoididae |
| Ricinoides Ewing, 1929 (Ricinulei: Ricinoididae) | 586, Ricinoides |
| Cryptocellus Westwood, 1874 (Ricinulei: Ricinoididae) | 588, Cryptocellus |
| Cryptocellus magnus Ewing, 1929 (Ricinulei: Ricinoididae) | 589–590, fig. 1, Cryptocellus magnus |
| Cryptocellus manni Ewing, 1929 (Ricinulei: Ricinoididae) | 591–592, figs 2, 5, 8, Cryptocellus manni |
| Cryptocellus emarginatus Ewing, 1929 (Ricinulei: Ricinoididae) | 592–593, figs 7, 9, Cryptocellus emarginatus |
| Pseudocellus barberi (Ewing, 1929) (Ricinulei: Ricinoididae) | 593–595, figs 3–4, 6, Cryptocellus barberi |
| Cryptocellus foedus Westwood, 1874 (Ricinulei: Ricinoididae) | 595–596, Cryptocellus foedus |
| Cryptocellus simonis Hansen and Sørensen, 1904 (Ricinulei: Ricinoididae) | 596, Cryptocellus simonis |
| Ricinoides sjostedtii (Hansen and Sørensen, 1904) (Ricinulei: Ricinoididae) | 597, (as Ricinoides sjöstedtii), Ricinoides sjostedtii (Hansen and Sørensen) |
| Ricinoides westermannii (Guérin-Méneville, 1838) (Ricinulei: Ricinoididae) | 597, (as Ricinoides westermanni), Ricinoides westermannii (Guérin-Méneville) |
| Ricinoides afzelii (Thorell, 1892) (Ricinulei: Ricinoididae) | 597, Ricinoides afzelii (Thorell) |
| Ricinoides crassipalpe (Hansen and Sørensen, 1904) (Ricinulei: Ricinoididae) | 597, Ricinoides crassipalpe (Hansen and Sørensen) |
| Ricinoides karschii (Hansen and Sørensen, 1904) (Ricinulei: Ricinoididae) | 597, Ricinoides karschii (Hansen and Sørensen) |
| Cryptostemma plebejum Hansen and Sørensen, 1904 (Ricinulei: Ricinoididae) | 597, Ricinoides plebejum (Hansen and Sørensen) |