A key is given to the Indo-Australasian species of Pectiniseta Stein. Descriptions are given of the type-species, pectinata (Stein), and of the four Australian species, australis (Malloch), new comb., occulta sp. nov., similis sp. nov. and torresiana sp. nov. Notes are given on the other two Australasian species. A catalogue of the described species in the genus is given.