A treatise on zoology . Cheirolepi-t, sj)., L. Devonian. A, transverse section of scalo. B, onter view of scalesenlarged. C, miicli enlar<;, shiny outer surface ; , vertical Fig. 2S!1. Restoration of Trissolepis Kounoviensis, Fr. (After Fritsch.) , anal fin ; ax, scale-coveredtail; , hypochordal fin ; , dorsal, j)./, pelvic, and , pectoral fin ; /, fulcral scale. Amhliiptcnis, Ag. ; Europe. Acrolepis, Ag. ; Europe and N. America ;Permian and Elonichthys, Geibel; Carboniferous inEurope and N. America ; Permian in Europe. Gyrolepis, Ag. ; Trias,Europe.

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A treatise on zoology . Cheirolepi-t, sj)., L. Devonian. A, transverse section of scalo. B, onter view of scalesenlarged. C, miicli enlar<;, shiny outer surface ; , vertical Fig. 2S!1. Restoration of Trissolepis Kounoviensis, Fr. (After Fritsch.) , anal fin ; ax, scale-coveredtail; , hypochordal fin ; , dorsal, j)./, pelvic, and , pectoral fin ; /, fulcral scale. Amhliiptcnis, Ag. ; Europe. Acrolepis, Ag. ; Europe and N. America ;Permian and Elonichthys, Geibel; Carboniferous inEurope and N. America ; Permian in Europe. Gyrolepis, Ag. ; Trias,Europe. Apateoleins, A. S. W. ; Atherstonia, A. S. W. ; Myriolepis, Eg.; 312 PALAEONISCOIDEI Trias, Wales. Goccohpis, Ag.; Trias, Wales, and Lower Lias,England. Oxygnatltus, Ag. ; Gentrolepis, Eg. ; Lower Lias, England. Sub-Family Trissolepinae. Very like Palaeoniscinae ; but tliereare no fulcra except on the upper caudal lobe, the lepidotrichia are

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Keywords: ., bookcentury1900, bookdecade1900, bookpublishe, booksubjectzoology