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Abstract
Various genera and Australian species of the Muricldae are discussed and their taxonomic status reviewed , particularly in relation to the structure of their radulae and opercula.
The genus Pterynotus and its subgenera are discussed and the Australian occurrences of some species arc noted. Nothotyphis Fleming is reduced to a synonym of Tripterotyphis Pilsbry and Lowe. a subgenus or Ptero-Galfridus Joussenume. and a new subspecies of this group is described. Galfridus Iredale is found to be only subgenerically distinct from Phyllocoma Tapparone-Canefri and the southern Australian eburneus (Petterd) is shown to be a subspecies of the East Coast P. (G.) speciosa (Angas). Tritonidea pettrdi Brazier is synonym of Maculolriton bracteatus (Hinds) . Two species of Aspella; anceps (Lamarck) and producla (Pease). are recognized from Australia. The relationships of Favartia are discussed and Murex Confusus Brazier is placed in this genus. Murexiella Clench and Fartante is reduced to a subgenus of Favartia and 5 Australian species are included. three of these being new. Murexsul Iredale is shown to be a synonym of Muricopsis Bucquoy et al and four Australian species are discussed. One being described as new. Spinidrupa Habe & Kosuge is probably a subgenus of Muricopsis. Several species are recorded from Australia for the first time.