258 PLIOCENE MOLLUSCA. 



Dimensions. — L. 12 mm. B. 2 mm. 



Distribution. — Not known living. 



Fossil : Coralline Crag : Gedgrave. Waltonian : Walton-on- 

 Naze (Kendall). 



Remarhs. — The shell here figured belongs to the Reed collection at York. Mr. 

 A. Bell informs me it is the original specimen upon which his description of 

 Pleurotoma gracilior was founded. Bj some misunderstanding this name was 

 given to another shell in the 3rd Supplement to the Monograph of the Crag 

 MoUusca. B. gracilior, S. V. Wood, jun., Mon. Crag Moll., 3rd Suppl., p. 4, pi. i, 

 fig. 5, 1882, is a different shell. 



Var. notata (A. Bell). Plate XXX, fig. 13. 



1871. Pleurotoma notata, A. Bell, Ann. Mag. Nat. Hist. [4], vol. vii, p. 358. 



Varietal Characters. — Shell fusiform, shorter than the type; whorls slightly 

 convex, covered with fine spiral stri^, and having eight to ten longitudinal ribs on 

 the second whorl ; body-whorl excavated towards the base, forming an open canal; 

 mouth narrow ; outer lip sharp ; inner lip reflected over a slightly sinuous pillar ; 

 suture distinct. 



Dimensions. — L. 12 mm. B. 4 — 5 mm. 



Distribntion. — Not known living. 



Fossil : Coralline Crag (Gedgravian) : Comer pit. Waltonian : 

 Little Oakley. 



Remarks. — This is another of the attenuata group, which in 1871 Mr, Alfred 

 Bell proposed to call FlenrotonM notata. Both Wood and Jeffreys regarded it, 

 however, as a variety of the species named above. Mr. Bell has lately identified 

 the specimen from Oakley here figured with those from the Coralline Crag upon 

 which his original description was based. He says they were covered with spiral 

 striae, most of them fine, but some coarse and elevated ; in one of these the coarser 

 striae retained their original pink colour. It should be noticed that in the type 

 form of R. attenuata the spiral strige are microscopical. 



Raphitoma plicatella, Bellardi. Plate XXX, fig. 7. 



1847. Eajjhitoma j)licatella, Bellardi (ex Jan, MS.), Mem. E. Accad. Sci. Torino [2], vol. ix, p. 620, 



pi. iv, fig. 18. 



1856. Pleurotoma plicatella, Homes, Foss. Moll. Tert. Wien, vol. i, p. 374, pi. xl, figs. 5, 6. 



1875. Bapkitoma plicatella, Seguenza, Boll. R. Com. Geol. Italia, vol. vi, p. 210, no. 212. 



1877. Raphitoma plicatella, Bellardi, Moll. Terr. Terz. Piem., pt. ii, p. 307, pi. ix, fig. 19. 



1890. Rap)}iitoma plicatella, Sacco, Boll. Soc. G-eol. Ital., vol. ix, p. 283, no. 4338. 



1910. Bxphitomaplicttella, Cerulli-Irelli, Palaeont. Ital., vol. xvi, p. 65, pi. vi, fig. 15. 



