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III.—Further Notes on a Collection of Fossil Shells, etc., from Sumatra (obtained by M. Verbeek, Director of the Geological Survey of the West Coast, Sumatra). Part III1
Published online by Cambridge University Press: 01 May 2009
Extract
This cast indicates a subfusiform shell with a somewhat elongated conical spire, but the apex is imperfect: volutions contiguous and convex; the body-whorl gradually tapering to a somewhat acute base.
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page 495 note 1 This observation is extremely interesting, as M. Verbeek had already noticed in Geol. Mag. 1877, p. 444, under head of bed 5, the occurrence of “casts of Gasteropods and Conchifers, together with Echinida, comparable with the Eocene forms Prenaster alpinus, Desor, and Periaster sub-globosus, Desor,” which Dr. Wright's observation tends to confirm.
page 499 note 1 This indentation, or fold, reminds one of the similarly situated line or fold marking the position of the filled up slit, or notch, near the suture in the lip of Pleurotoma; there is no slit in the lip of Terebra, but in the recent Tereira duplicata the lip is slightly indented.
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