In this paper some taxonomic observations on the Australian flea beetle genus Pepila Weise, 1923 are reported. The following species are transferred to the genus Pepila and lectotypes for them designated: Chaetocnema carinata Baly, 1877; Plectroscelis crassipennis Blackburn, 1896; Chaetocnema fuscomaculata Baly, 1877; Plectroscelis hypocrita Blackburn, 1896; Chaetocnema laticeps Baly, 1877; Plectroscelis meyricki Blackburn, 1896; Dibolia ochracea Waterhouse, 1838; Plectroscelis pallidior Blackburn, 1896; Dibolia pygmaea Waterhouse, 1838; Plectroscelis quadraticollis Blackburn, 1896; Chaetocnema submetallescens Baly, 1877; Plectroscelis tumbyensis Blackburn, 1896; Chaetocnema waterhousei Baly, 1877. The synonymy of Chaetocnema submetallescens Baly, 1877 with Plectroscelis longior Blackburn, 1896 is proposed. In addition, the megalopoides species-group, including P. megalopoides Weise, 1923, P. uptoni n.sp., and P. longifallica n.sp., is analyzed.