2 literature references for Porcellionides barroisi (Dollfus, 1889B):

Author: Schotte, M., B.F. Kensley, and S. Shilling.
Year: 1995
Title: nwards). World list of Marine, Freshwater and Terrestrial Crustacea Isopoda. National Museum of Natural History Smithsonian Institution: Washington D.C., USA.
Author: Dollfus, A.
Year: 1889
Title: Isopodes terrestres recueillis aux Acores. Revue Biologique du Nord de la France 1(8):1-3, 391- 392.