Purcell, W. F. (1910). The phylogeny of the tracheae in Araneae. Quarterly Journal of Microscopical Science 54: 519-564.
| Taxon | |
|---|---|
| Calculus bicolor Purcell, 1910 (Orsolobidae) | 527, (Df), Calculus bicolor Original description |
| Calculus Purcell, 1910 (Orsolobidae) | 527, type Calculus bicolor Purcell, 1910; gender masculine Original description |