Nomenclature
original description
Koehler, R. (1920). Echinodermata: Asteroidea. Scientific Reports of the Australiasian Antarctic Expedition C8: 1-308. , available online at http://www.biodiversitylibrary.org/item/162113
page(s): 168 [details] 
basis of record
Clark, A. M. (1996). An index of names of recent Asteroidea, part 3. Velatida and Spinulosida. <em>In: Jangoux, M.; Lawrence, J.M. (Ed.) (1996). Echinoderm Studies.</em> 5: 183-250. (look up in IMIS) [details]
Other
From editor or global species database
Taxonomy According to A.M. Clark (1989: 206): A synonym (or "race") of P. affinis E.A. Smith 1876 according to Fisher (1940); treated as a subspecies of P. affinis by A.M. Clark (1962) and Guille (1974) but doubtfully distinct according to Downey in Clark & Downey (1992). The Antarctic type locality might justify distinction but P. affinis as lebruni has been recorded from the S. Orkney Is. [details]