Species
• P. basedowi Etheridge Jr., 1907 • P. corrugata Hoare et al., 1989 • P. darwini de Koninck, 1877 • P. guizhouensis Xu, 1980 • P. hunanensis Ku and Chen, 1963 • P. inflata Morningstar, 1922 • P. inflatiformis Chernyshev, 1989 • P. jamesi Biakov, 2002 • P. lusabaensis Dickins, 1999 • P. nova Waterhouse, 1983 • P. obtusa Hoare et al. 1989 • P. perumbonata White, 1880 • P. sabbatinae Pagani, 2004 • P. sinuata Dembskaja, 1972 • P. speluncaria Geinitz, 1848 • P. subucuta Waagen, 1881 • P. thompsoni Reed, 1932 • P. undosa Muromtseva, 1984 == References ==