PULMONATA. 131 



margin, flattened towards the base, and furnished with numerous regular teeth, of which 

 the posterior ones are pliciform. The anterior canal is defined by an obscure, nearly 

 vertical plait on the outer lip, and a curved elevated plait at the base of the columella ; 

 inner lip thickened, and spread out, at the base, forming a prominent callus towards 

 the front of the whorl, plicated along the whole length on the inner margin, and 

 produced at the posterior extremity into a bluntly pointed projection which forms the 

 left wall of the posterior canal. Columella nearly straight, flattened, and presenting 

 towards the front end, a deep three-sided concavity connected with the body whorl by 

 a short, wide depression ; columellar teeth pliciform, the posterior ones longer and 

 more oblique than the others. 



This species, the prettiest of the English Eocene cowries, resembles C. media, (Desh.) 

 more closely, perhaps, than any other of the fossil Cypraege ; but the elevated spire, the 

 anterior callus, and the strongly marked posterior canal impart to it a distinct 

 character. 



Size. — Axis, rather more than 1 inch: diameter, 7-10ths of an inch nearly. 

 Locality. — Barton, where it is not very common. 



No. 75. Cypr^ea tuberculosa. Duclos. Var. Coombii. Sowerby. Tab. XVI, 

 fig. 2, Tab. XVII, fig. 5. 



OVULA TUBERCULOSA, Duclos. 



CYPRiEA Deshayesii, Gray. (1832). (Add. to Mon. Cypr.,) Zool. Journ., vol. iv, p. 83, 

 No. 64*. 

 — — G. Sow. (1832). (Notes on Gray's Additions to Mon. Cypr.,) Zool. 



Journ., vol. iv, p. 221. 

 Ovula tuberculosa, Desk. (1824-37). Desc. des coq. foss, &c, vol. ii, p. 717, t. 96, fig. 16, 

 t. C7, fig. 17. 

 — — Desh. (1844). 2d edit. Lam. Hist, nat., vol. x, p. 478, No. 3. 



Cypr^a Coombii, J. Sow. (1850). Dixon's Geol. &c, Sussex, pp. 108 and 188, t. 8, fig. 6. 

 Ovula tuberculosa, If Orb. (1852). Podrome de Paleont., vol. ii, p. 314, No. 297. 



C. testa magna, trigond, ventricosd, lavi, dor so aliquando tuber culatd, subtus planulatd : 

 aperturd elongatd, angustissimd, fere edentuld, arcuatd, antice latiori, utrdque extremitate 

 canaliculatd ; canali posteriori ad spiram reflexo, canali anteriori recto : labro compresso 

 postice exserto, sub-auricidiformi, lateraliter expanso. 



Shell large, trigonal, ventricose, smooth, sometimes presenting one or two tubercles 

 on the back ; base flattened, posterior end very broad, flattened, almost truncated : 

 aperture elongated, curved, very narrow, rather wider in front, nearly if not altogether 

 toothless, with a wide canal at each extremity ; the anterior canal straight, the posterior 

 one curved and bent upwards towards the spire ; outer lip broad-edged, expanding at 

 the posterior extremity into an ear-shaped projection. 



