This is the eight paper in a series describing the undescribed mitriform gastropod fauna of Western Australia. The following three species are described as new: Austromitra benschneideri n. sp., Austromitra morrisoni n. sp., compared with Austromitra bellapicta (Verco, 1909) and Austromitra apicitincta (Verco, 1896), and Pusia quokka n. sp., compared with Pusia marrowi Cernohorsky, 1973, Pusia simoneae Marrow, 2017 and Pusia voluta Marrow, 2017. New taxa: Austromitra benschneideri n. sp., Austromitra morrisoni n. sp., Pusia quokka n. sp.