VIII.—On the Structure and Affinities of Metaclepsydropsis duplex (Williamson)

While collecting specimens of Diplolabis römeri (Solms) at Pettycur about three years ago, I discovered several blocks of stone containing numerous petrified fragments of another Zygopterid fern—Metaclepsydropsis duplex (Williamson). Two of the blocks were found to be parts of one large mass, and the petrifactions could be traced from the one block into the other. In size the complete mass must have been about 3 feet × 2 feet × 2 feet. The larger portion had to be broken into two before it was possible to remove it. Another block containing similar specimens was obtained later, but the preservation was so poor that the whole of the material was discarded.