60 PLIOCENE MOLLUSCA. 



1901. Cassis sahuron, Kobelt, Icon, sclialentrag. europ. Meeresconcli., vol. ii, p. GG, pi. xlv, tigs. 1 — 5. 

 1912. Cassis sahuron, Tesch, Med. v. d. Eijks. v, Delfstoffen, pt. iv, p. 7&. 



Specific Characters. — Shell ovate, thick and strong ; whorls 7, slightly convex, 

 the last ventricose, much the largest, seven-eighths the total length; ornamented by 

 regular and well-marked spiral stride ; spire very short ; apex acute ; mouth 

 irregularly oval, angulated above ; outer lip thick, dentated ; inner lip forming 

 a wide glaze ; columella excavated, rugose, toothed towards the lower part ; canal 

 short, open, reflected. 



Dimensions. — L. 40 — 5G mm. B. 30 — 40 mm. 



Distribution. — Recent .- western Europe, Mediterranean, Algeria, Morea, Smyrna, 

 Syria. 



Fussil ; Newbournian Crag : Waldringfield. 



Bolderien (Miocene), Diestien, and Scaldisien : Belgium. Scaldisien : Holland. 

 Miocene: Vienna, Poland, Podolia. Miocene and Pliocene: Italy, France. Upper 

 Pliocene and Pleistocene : Sicily. 



BemarJcs. — This is another of the characteristic Miocene species which lingered 

 on in the Anglo-Belgian basin until Scaldisien times. M. Van den Broeck reports 

 it from the Sables a Panopsea (Miocene) of Antwerp, where it is common, from 

 those a Terebratnla r/randis (Diestien) and a Ghrysodomus contrarln, (Scaldisien). 

 There is a specimen in the British Museum (Natural History) stated, probably in 

 error, to have come from the Coralline Crag of Sutton,^ and Wood recorded it from 

 Waldringfield, at which place, however, he regarded it as derivative. It is not 

 known from Walton, nor have I met with it either at Beaumont or Oakley. M. 

 van den Broeck gives it from Waenrode, a deposit which I regard as Lower 

 Pliocene." It is possibly derivative in the Scaldisien of Belgium and Holland. 



Seguenza gives it from the Pleistocene of Sicily, where it occurs with Neptunea 

 contraria, Modiola modiolus, Cijprina island ica, and other northern species. It still 

 lives in the Mediterranean, ranging as far west as Smyrna and the Syrian coast. 



Genus ROSTELLARIA, Lamarck, 1799. 

 Suh-genns RIMELLA, Agassiz, 1840. 

 Rostellaria (Rimella) gracilenta, S. V. AYood. Plate II, fig. 3. 



1882. Bostellaria gracilenta, S. V. Wood, Mou. Crag Moil., 3rd Suppl., p. 1, tab. i, tig. 1. 



Specific Characters. — Shell strong, slender, elongate, regularly tapering to a 

 blunt point; whorls 7 or 8, flat or nearly so; ornamented by well-marked, rounde d 



^ Mr. A. Bell doubts wlietlier this specimen is a British fossil. 

 2 Quart. Journ. Geo!. Soc, vol. liv, p. 319, 1898. 



