Potorostrongylus woyliei n. sp. (Nematoda: Cloacinidae) from the brush-tailed bettong Bettongia penicillata (Marsupialia) from Western Australia, Australia, with comments on potoroid-potorostrongylid associations and a key to the species of Potorostrongylus. Comparative Parasitology, 72(1), January 2005: 28-32. 29 [Zoological Record Volume 141]