NASSA TURONICA. 85 



present form occurs in the Belgian Crag I presume he considered it distinct from 

 the Russian shelL 



Nassa spectabilis (Nyst). Plate V, figs. 1<), 17. 



1837. Buccinum elegans, Diijardiu (nou Sowerby), Mi'm. Soc. Gcol. France, vol. ii, p. 298, pi. x.\, figs. 



8, 10. 

 1843. Buccinum spectabile, Nyst, Coq. foss. Terr. Tert. Belg., p. 577. 

 1886. Nassa spectabilis, Dollfus et Dautzenberg-, Et. prel. Coq. foss. Fal. Tour., p. 11 . 



Specific Characters. — Shell small, rather fragile, ovato-conical ; AYliorls convex, 

 the last much the largest, one half the total length ; spire short, with an obtuse 

 apex; ornamented by about 16 rather blunt longitudinal ribs as wide as the spaces 

 between them, and by very fine spiral striae which cross the riljs but do not cause 

 tuberculation where they intersect; suture deep; mouth ovate, acutely anguhite 

 above, with a tooth on the left, and a row of short raised ridges on the inside of the 

 outer lip ; canal short and open, turning to the left. 



Dimensions. — L. 10 mm. B. 6 mm. 



Distribution. — Not known living. 



Fossil : Waltonian Crag : Little Oakley. Miocene : Touraiue. 



Rpmarks. — The Oakley shell here figured was perfect when I found it, Ijut was 

 afterwards broken by accident. M. Dautzenberg, however, had previously 

 identified it as a well-known Miocene species, N. spectabilis. I figure with it a 

 perfect specimen from the Faluns of Touraine, which Prof. Peyrot was kind enough 

 to send me. 



Nassa turonica (Deshayes). Plate V, figs. 14, 15. 



1837. Buccinvin (jraniferum, Dujardin, Mem. Soc. Geol. France, vol. ii, pt. 2, p. 299, pi. xx, figs. 11,12. 



1844. Buccinum turonense, Deshayes (Lamarck), Hist. Nat. Anim. sans Vert., 2nded., vol. x, p. 223. 



1871. Nassa granifera, A. Bell, Anu. Mag. Nat. Hist. [4], vol. vii, p. 3-55. 



1872. Nassa granifera, S. V. Wood, Mon. Crag Moll., 1st Suppl., p. 11, tab. vi, fig. 11. 

 1886. Nassa turonica, Dollfus et Dautzenberg, Et. prel. Coq. foss. Fal. Tour., p. 11. 

 1897. Nassa granifera, A. Bell, Trans. Roy. G-eol. Soc. Cornwall, vol. xii, p. 142. 



Specific Cliaract'^rs. — Shell small, solid ; whorls more or less convex, with 

 strong longitudinal ribs, which do not reach the base of the shell; crossed by spiral 

 strige, giving rise to granulation at the point of intersection ; mouth oval, sharply 

 angulated above; canal notched, very short, the back of it transversely striated, 

 separated from the body- whorl by a deep groove. 



Dimensions. — L. 10 mm. 



Distribution. — Not known living-. 



St. Erth. 



Fossil : Coralline Crag. Red Crag : "Waltonian and Newbournian. 



