“Thyasira tomeana, new species.
(Plate XXXIX, fig. 3)
Shell moderately convex, subovate, concentrically sculptured with incremental lines and covered by a pale straw-colored periostracum. Lunule small, ovate, lanceolate, moderately impressed; escutcheon long, very narrow, bordered externally by a sharply incised groove; behind his a rather shallow sulcus radiates from the beak, bounded behind by a rounded radial ridge; ligament thin, delicate, set in a narrow groove; margins reflecting the external sculpture, beaks narrow, prosogyrate, inconspicuous. Lon. 14.5, lat. 13.0, diam. 9 mm.
Several valves came up with mud on the anchor from a depth of ten fathoms in the roadstead of Tomé, Chile.”
(Dall, 1901)
