species of South Australian Polyplacophora / M.M. Maughan -- Polyplacophora from South Australia / W.T. Bednall and E.H.V. Matthews -- New species of Australian Chiton from Queensland, Enoplochiton torri / R.A. Bastow and J.H. Gatliff -- Notes on Polyplacophora, chiefly Australasian (Part II) / Tom Iredale -- Western Australian Polyplacophora / W.G. Torr -- South Australian Polyplacophora / W.G. Torr -- The Polyplacophora of Tasmania / W.L. May and W.G. Torr -- Misnamed Tasmanian Chitons / Tom Iredale and W.L. May -- A review of the Australian representatives of the genus Ischnoradsia ; Monograph on the genus Stenochiton (order Polyplacophora), with descriptions of two new species ; Notes on South Australian Polyplacophora ... / Edwin Ashby -- New species of Tasmanian Mollusca / W.L. May -- A review of the genus Loricella (order Polyplacophora), with notes on species previously unnoted and description of a new species ; Notes on Australian Polyplacophora, including descriptions of two new genera, a new variety, and the description and proposed recognition of Mr. Bednall's Stenochiton pilsbryanus of a new species ; Descriptions of six new species of Australian Polyplacophora (four Acanthochitons and two Callistochitons ; The occurrence of three species of Stenochiton in Western Australia ; Description of Bracebridge Wilson Collection of Victorian Chitons, with descriptions of two new species ; Notes on some Western Australian Chitons (Polyplacophora), with additions to the fauna and the description of a new species of Rhyssoplax ; The rediscovery of Choriplax (=Microplax) Grayi, Adams and Angas (Order Polyplacophora) with notes on its true place in the natural system and the description of a new sub-species ; Notes on Australian Polyplacophora, with descriptions of three new species and two new varieties ; Types of species of Australasian Polyplacophora described by de Blainville, Lamarck, de Rochbrune and others, now in the Museum d'Histoire Naturelle, in Paris ; A new species and sub-species of Acanthochiton ; Notes on the genus Stenochiton and the discovery and recognition of the type of Blainville's Chiton longicymba in Stenochiton juloides, Adams and Angas ; Further notes on Victorian Chitons ; The regional distribution of Australian Chitons (Polyplacophora) ; New species of Chitons from Broome, Western Australia ; Contributions to the fauna of Rottnest Island, no. 11 : Polyplacophora ; Notes on the Australian representatives of the genus Acanthopleura, Guilding, together with a description of Polyplacophora in the Western Australian Museum ; Notes on Australian Polyplacophora, with additions and corrections of the 1918 distribution list / Edwin Ashby.