Extract

A specimen of Peltocaris aptychoides, from the graptolite shales, lower Silurian beds, Moffat. He mentioned that it was the carapace of a small Phyllopod crustacean, fragments of which had occasionally been found in the Llandeilo flags of Dumfriesshire, and, from their resemblance to those found in the Carboniferous Limestone, Mr. Salter had named them provisionally Dithyrocaris aptychoides. On sending the cast of this specimen to Mr. Salter, he stated that it was the first perfect specimen he had seen, and, from its shield-like form, he re-named the genus Peltocaris.

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