A new lungfish from the Lower Carboniferous of Victoria, Australia.

Delatitia gen. nov. (type species Ctenodus breviceps Woodward), is described from a skull roof and isolated toothplates from the Lower Carboniferous Mansfield Group, Victoria. The new genus is similar to Ctenodus in the arrangement of bones B, C, D, I, J and L, but differs in having long E bones, a narrow Y1, Z not completely enclosed laterally by Y2, and the occipital sensory-line running posteromesially out of the I bones. Its toothplates have flat radiating tooth rows with the labial cusps conical and distally directed. The Y1 bones have a deep embayment for an opercular process. -Authors