Included taxa
Butler, A. G. (1880). On Arachnida from the Mascarene Islands and Madagascar. Proceedings of the Zoological Society of London 47(4, for 1879): 729-734, Pl. LVIII. [published in April 1880, after Duncan, 1937] doi:10.1111/j.1096-3642.1879.tb02709.x 
Species
| Species | Family | Page / figures | published as |
|---|---|---|---|
| Caerostris mitralis | Araneidae | 731, pl. 58, f. 4 (Df) | Caerostris stygiana |
| Caerostris mitralis | Araneidae | 732, pl. 57, f. 5 (f) | Caerostris paradoxa |
| Drassodes malagassicus | Gnaphosidae | 730, pl. 58, f. 3 (Dm) | Drassus malagassicus |
| Neoscona punctigera | Araneidae | 730, pl. 58, f. 1 (Df) | Epeira slateri |
| Neoscona triangula | Araneidae | 732, pl. 58, f. 2 (Df) | Epeira locuples |
| Pyresthesis laevis | Thomisidae | 733, pl. 58, f. 6 (Df) | Pyresthesis cambridgii |
Genera
| Genus | Family | Page |
|---|---|---|
| Pyresthesis Butler, 1880 | Thomisidae | ? |