BELLARDIELLA GRACILIS. 241 



Oakley. Some of them are fragmentary, but tliey are not worn, and being fragile 

 cannot have been derivative at that locality. Jeffreys reports this species from the 

 Coralline and Red Crags, Nyst and M. van den Broeck from the Scaldisien of 

 Belgium and Dr. Tesch from that of Holland. It is said to be fairl}" common in 

 the Upper Pliocene of northern Italy, and Mr. A. Bell has recorded it from the 

 Upper Pliocene of Biot ; it has been found also in Lower Pliocene deposits on the 

 Italian Riviera. I am not aware that it has been met with in the English Crag at 

 any horizon later than that of Oakley. My Oakley fossils are somewhat more 

 slender and elongate than Wood's figure of this species. 



Genus BELLARDIELLA, Fischer, 1883. 



Bellardiella gracilis (Montagu). Plate XXVIII, figs. 34, 35. 



1803. Murex gracilis, Montagu, Test. Brit., pt. i, p. 267, pi. xv, fig. 5. 



1853. Mancjella gracilis, Forbes aud Haiiley, Brit. Moll., vol. iii, p. 473, pi. cxiv, fig. 4. 



1867. Defrancia gracilis, Jeffreys, Brit. Couch., vol. iv, p. 363, pi. Ixxxviii, fig. 6. 



1873-5. Defrancia gracilis, Seguenza, Boll. E. Com. Geol. Italia, vol. iv, p. 298, no. 123, 1873 ; vol. v, 



p. 276, no. 40, 1874; vol. vi, p. 208, no. 191, 1875. 

 1881. Pleurotoma emarginata, Nyst, Couch. Terr. Tert. Belg., p. 48, pi. iii, fig. 12. 

 1883. Pleurotoma (Bellardia) gracile, Bucquoy, Dautzenberg et DoUfus, Moll. mar. Eouss., vol. i, 



p. 88, pi. xiv, figs. 1, 2. 

 1890. ClatJiurella emarginata, Sacco, Boll. Soc. Geol. Ital., vol. ix, p. 280, no. 4269. 

 1896. DaphneUa (Bellardiella) gracilis, Cossmann, Ess.Palt'oconch. couip., vol. ii, p. 128. 



1904. Bellardiella gracilis, Sacco, Moll. Terr. Terz. Piem., pt. xxx, p. 53, pi. xiv, figs. 2, 3. 



1905. Bellardiella gracilis, K(}belt, Icon, schaleutrag. europ. Meeresconch., vol. iii, p. 348, pi. xcv, 

 figs. 9—12. 



1910. DaphneUa (Bellardiella) gracilis, CeruUi-Irelli, Palaeont. Ital., vol. xvi, p. 61, pi. x, figs. 50 — 53 



1912. Pleurotoma gracilis, Tesch, Med. v. d. Rijks. v. Delfstoffen, pt. iv, p. 90, no. 228. 



1914. DaphneUa (Bellardiella) gracilis, CipoUa, Palaeont. Ital., vol. xx, p. 153, pi. xiii, figs. 26 — 28. 



Specific Characters. — Shell slender, fusiform, turreted ; whorls 8 — 10, convex, 

 ornamented by twelve or more strong longitudinal ribs, discontinuous at the suture 

 and flexuous on the body-whorl, which do not reach the base of the shell, and by 

 closely set and fine undulating spiral ridges ; suture wide and rather deep ; mouth 

 oval ; labial notch deep and well marked ; canal wide, expanded below ; outer lip 

 thickened inside, with a sharp edge ; pillar flexuous. 



Dimensions. — L. 18 mm. B. 6 mm. 



Distribution. — Recent : coasts of Great Britain and Ireland, principally south 

 and west, from the Channel Islands to Shetland. Atlantic coast from Cherbourg 

 to Gibraltar. Madeira, Canaries. Mediterranean, Adriatic, ^gean. 



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