Parastylochus astis is redescribed on the basis of the type specimen and new specimens from Broome, Western Australia and Ile des Pins, New Caledonia. The redescription shows that that a ductus vaginalis, connecting the vagina with the female antrum, is present, but has not previously been described. The genus Parastylochus is transferred from its current position in the Stylochinae Laidlaw, 1903 to the Cryptophallinae Bresslau, 1933 on the basis of the presence of a ductus vaginalis.
In 2004, the South Australian Museum and the Royal Society of South Australia became partners in Southern Scientific Press. This led to the amalgamation of their two professional journals. The Transactions of the Royal Society of South Australia now incorporates the Records of the South Australian Museum. Transactions of the Royal Society of South Australia deals with natural history relating to South Australia