Firstman, B. (1973). The relationship of the chelicerate arterial system to the evolution of the endosternite. Journal of Arachnology 1: 1–54.
| Taxon | |
|---|---|
| Pseudocellus boneti (Bolívar y Pieltain, 1942) (Ricinulei: Ricinoididae) | 5, 18, figs 11a–b, Cryptocellus boneti |
| Pseudocellus osorioi (Bolívar y Pieltain, 1946) (Ricinulei: Ricinoididae) | 5, 18, Cryptocellus osorioi |