EU PLEURA CAUDATA. 337 



Fossil: Waltonian Crag: Beaumont, Little Oakley. New- 

 bourn ian : Waldringfield. 



Miocene : Touraine. 



Remarks. — In the concluding part of his 1st Supplement, Wood figured a shell 

 from Waldringfield sent to him by R. Bell as Murex insculptus. It was considered 

 by the latter to be identical with one he had received from Seguenza under that 

 name. 1 Wood was unable to trace any reference to it, pointing out, however, that 

 it resembled in some respects a Miocene species from Touraine, Murex exiguus, 

 described by Dujardin, but that he was not satisfied it was the same. 



I have lately sent a photograph of the Waldringfield fossil to my friend, 

 M. Dautzenberg, who considers it belongs to the genus Pisania, and has kindly 

 sent me some specimens of J', exigua for comparison. Except that our Crag shell 

 is somewhat the larger and that its costae are rather more numerous, the two seem 

 to correspond. 



I have also found a specimen of P. exigua in the Waltonian Crag at Beaumont. 

 Neither it nor that from Waldringfield presents the appearance of being derivative; 

 I am inclined to consider this species one of the survivors from Miocene seas of 

 which we have so many instances in the Pliocene beds of East Anglia. 



Genus EUPLEURA, H. and A. Adams, 1853. 

 Eupleura caudata (Say). Plate XXXV, fig. 24. 



1822. Ranella caudata, Say, Journ. Acad. Nat. Sci. Philad. [1], vol. ii, p. 236. 



1841-70. Ranella caudata, Gould, Iuv. Mass., ed. 1, p. 297, fig. 204, 1841 ; ed. 2, p. 386, fig. 648, 



1870. 

 1843. Ranella caudata, de Kay, Nat. Hist, New York [5], Mollusca, p. 139, pi. viii, fig. 176. 

 1865. Ranella caudata, Stimpson, Amer. Journ. Conch., vol. i, p. 58, pi. viii, fig. 5. 

 1903. Eupleura caudata, Cossmanu, Ess. Pah'oconch . compar., vol. v, p. 50. 

 1915. Eupleura eaudata, Johnson, Bost. Soc. Nat. Hist., Occ. Papers, vol. vii ; Fauna of New England, 



pt. xiii, p. 130. 



Specific Characters. — Shell small, rhomboidal, solid; whorls 5, angulated above; 

 ornamented by prominent longitudinal ribs, two of them spinous, stronger and 

 more varicose than the others, and by fine equidistant spiral ridges ; mouth ovate ; 

 outer lip varicose, angulated by the keel, strongly denticulated within ; canal 

 straight, narrow, rather long. 



Dimensions. — L. 25 mm. B. 16 mm. 



Distribution. — Recent: Coasts of Massachusetts and Connecticut, 1 — 8 fathoms. 

 Fossil : Pliocene : Florida, South Carolina. Pleistocene : Florida. 



Remarks.' — The term Eupleura was originally used by H. and A. Adams for a 



1 The term Murex insculptus had been previously used by Bellai-di (in 1872) for a different shell 

 from the Italian Miocene. 



