Kinahan, J. R. (1857). Analysis of certain allied genera of terrestrial Isopoda; with description of a new genus and a detailed list of the British species of
Ligia,
Philougria,
Philoscia,
Porcellio,
Oniscus and
Armadillidium.
The Natural History Review. 4(Proceedings of Societies): 258-282, 302-305, pls. 19-22.