PALÆONTOLOGY
shire. The second species, Platysomus parvulus, which is common to the Littleborough and St. Helens districts, and is also widely distributed in the north of England and Scotland, is a member of the type genus. A second representative of the same genus, P. forsteri, is included in Mr. Morton's list from the Victoria pit.
At the close of his list of the species from the latter locality Mr. Morton adds the following note:—
'The genera Cælacanthus, Ctenoptychius, Diplopterus, Gyrolepis, Holoptychius, Megalichthys, and Platysomus, have been recorded from various localities in south-west Lancashire, but since Mr. William Peace, of Wigan, collected fish-remains associated with the cannel coal of that place, fifty years ago, so little has been done that the list requires revision.'
From the Millstone Grit of the county Mr. Wellburn[1] has recorded the following fishes, viz.: Pristodus falcatus, Psephodus, sp. Pœcilodus jonesi, Orodus elongatus, Helodus, sp. Acanthodes wardi, Climatius, sp. Euctenodopsis (gen. nov.), Acondylacanthus, sp. Cœlacanthus, sp. Rhadinichthys, spp. Elonichthys aitkeni, and Acrolepis hopkinsi.
ADDENDUM
The following species of Carboniferous fishes appear in Mr. Bolton's list of 1905 in addition to those above-mentioned, viz.:—Pleuracanthus alatus, P. cylindricus, P. serratus, Helodus simplex, Psephodus magnus, Sphenacanthus hybodoides, Hoplonchus elegans, Gyracanthus formosus, Euctenius unilateralis, Ctenodus cristatus, Strepsodus sauroides, S. sulcidens, Elonichthys striatus, and Mesolepis scalaris.
- ↑ Geol. Mag. (4), viii. 216 (1901).
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