Original diagnosis by Augener (1922: 191-192): ''Sylliden-artiger Wurm, an Exogone erinnernd, mit mittlerer ... [details]
Pacific Ocean: Juan Fernández Archipelago (off Chile); Oahu Island (Hawaii). [details]
The name of the genus Pseudexogone is composed by the Greek prefix pseudo-, meaning 'false' or 'fake', and the name ... [details]
The species is named in honour of Dr. Kåre Bäckström (18??-19??), Swedish zoologist from Stockholm, PhD in 1924 ... [details]
Sublittoral rocky bottoms, on calcareous algae. [details]
Másatierra (= Robison Crusoe) Island, Juan Fernández Archipelago (Chile), Pacific Ocean (gazetteer estimate ... [details]
''The type specimen of the type species was not deposited in Sweden, although it was collected during a Swedish ... [details]