402 PLIOCENE MOLLUSC A. 



1840. Cancellaria acutangula aud vars., G-rateloup, Conch, foss. Terr. tert. Bass, del' Adour, vol. i 



(Cancellaria), pi. i, figs. 1 — 4. 

 1890-94. Cancellaria acutangula, Sacco, Boll. Soc. Geol. Ital., vol. ix, p. 263, no. 3844, 1890; 0. (Gulia) 



acutangula and vars., Moll. Terr. Terz. Piem., pt. xvi, p. 21, pi. ii, figs. 1 — 4, 1894. 

 1899. Trigone-stoma (Ventrilia) acutangula, Cossmann, Ess. Paleoconch. compar., vol. iii, p. 27, pi. i. 



figs. 12—14. 



Specific Characters. — Shell large, ovate, sub-umbilicate ; whorls 5 or 6, sub- 

 ventricose, angulated above, with a square shelf below the suture, the last much 

 the largest ; spire short, rapidly diminishing upwards ; ornamented by longitudinal 

 costse, oblique and irregular, not very prominent, denticulated on the keel, and by 

 inconspicuous spiral ridges ; mouth large, trigonal, angulated below ; outer lip 

 sharply angulated at the upper right-hand corner, grooved internally ; inner lip 

 reflected on the columella, expanded upwards ; columella indistinctly triplicate. 



Dimensions. — L. 36 mm. B. 24 mm. 



Distribution. — Not known living. 



Fossil : Red Crag, probably Newbournian and derivative. 



Miocene: Piedmont, Aquitaine, Anjou. 



Remarks. — The specimen figured under this name belongs to the Sedgwick 

 Museum at" Cambridge, where it has been labelled Red Crag, Suffolk ; it may 

 probably have been obtained from the Newbournian horizon of the Waldringfield 

 district which has yielded a number of specimens believed by Wood to be 

 derivative. 



It appears to belong to the sub-genus Ventrilia {Gulia of Sacco 1 ) of which our 

 Crag fossil, which I refer to the species acutangulum, has been taken as the type. 

 It is a characteristic Miocene shell known from south-west France, Piedmont and 

 possibly from the Vienna basin. 



Genus BONELLITIA, Jousseaume, 1888. 

 Bonellitia evulsa (Solander). Plate XL, figs. 12—14. 



1766. Buccinum evulsum, Solander in Brander, Foss. Hant., p. 13, pi. i, fig. 14. 



1823. Cancellaria evulsa, J. Sowerby, Min. Conch., vol. iv, p. 84, pi. ccclxi, figs. 2 — 4. 



1843. Cancellaria evulsa, Nyst, Coq. foss. Terr. tert. Belg., p. 477, pi. xxxix, fig. 13. 



1856. Cancellaria evulsa, Beyrich, Zeitschr. Deutsch. Geol. Gesell.vol. viii, p. 556, pi. xvii, figs. 2—5. 



1856. Cancellaria Bellardii, Homes, Foss. Moll. Tert. Wien, vol. i, p. 314, pi. xxxiv, figs. 17, 18. 



(?) 1867. Cancellaria evulsa, Speyer, Palaeontographica, vol. xvi, p. 177, pi. xvi, figs. 1 — 4. 



1874. Cancellaria Bellardi, Van den Broeck, Ann. Soc. Roy. Malac. Belg., vol. ix, pp. 120, 135. 



1889. Cancellaria evulsa, von Koenen, Abh. geol. Specialk. Preussen, vol. x, p. 117, pi. x, figs. 1 — 3. 



1 M. Cossmann considers the terras Gulia and Ventrilia synonymous, preferring the use of the 

 latter. 



