176 EOCENE MOLLUSCA. 



Section B. Pullus sub-papillary. 



a. Shell piriform ; inner Up effuse; columella plaits feu- . 



No. 114. Voluta cithara. Lamarclc. Tab. XXIII, figs. 6 a — c. 



Henckel. 1760. Pyrotol., t, 5, fig. 9. 



Favanne. 1780. D'Argenv. Conchyl. (3d edit.), t. 166, fig. 4. 



Burtin. 1784. Oryctogr. de Bruxelles, t. 15, D. 

 Citiiarcedus. Chemn. 1795. Conchy, cab., vol. xi, t. 212, figs. 2098, 2099. 

 Voluta Harpa. Lamk. (non Linn). 1802. Ann. du Mus., vol. i, p. 476, No. 1 ; and 

 vol. xvii, p. 74, No. 1. 



— citiiara. — 1816. Tab. Encyclop. et method., t. 324, figs. 1 a, b. 



— _ _ 1822. Hist, nat., &c, vol. vii, p. 346, No. 1. 



— — De France. 1829. Diet, des Sci. nat., vol. lviii, p. 474. 



— harpa. Desk. 1833. Encycl. method. (Vers), vol. iii, p. 1143, No. 21. 



— citiiara. Desk. 1824 — 37. Descr. des Coq. foss., &c , vol. ii, p. 681 ; t. 90, figs. 



11, 12. 



— — Sow. 1842. Min. Con., vol. vii, p. 31 ; t. 625, figs. 1—3. 

 — Nyst. 1843. Desc. des Coq., &c, de la Belg., 590, No. 508. 



— — Sow. 1850. Dixon's Geol., &c, of Suss., p. 106; t. 5, fig. 17. 



— cythara. D'Orb. 1850. Prod, de Paleont, vol. ii, p. 353, No. 277. 



V. testa ovato-oblongd, costatd, postice Icevi, antice coarctatd, transversim sulcata, late 

 emarginatd ; spird brevi, sub-muricatd, apice sub-papillari : anfractibus convexis, ventricosis ; 

 costis distantibus, postice bispinosis : labro ienui, lavi ; labio antice expanso ; columella 

 quinquies plicatd. 



Var. an gu lata (fig. 6 b) testa breviori, latiori, costis numerosioribus ; anfractibus 

 angulatis, unicd serie spinarum coronatis. 



Shell ovate-oblong ventricose, contracted in front, ribbed, smooth except towards 

 the base, where it is transversely furrowed ; spire short, armed with short spines ; apex 

 conical, sub-papillary : whorls convex, rounded at the shoulder ; ribs distant, extending 

 to the middle of the whorls, crowned with two or three rather blunt, nodiform spines, 

 which are lost on the last whorl of the fully formed shell. The aperture is effuse, and 

 widely notched in front ; the right lip is thin, sharp-edged, smooth within ; the 

 columellar lip thin, widely spread over the front part of the body whorl; columella 

 furnished with one prominent very oblique fold in front, and three or four smaller ones 

 behind. 



The English specimens agree perfectly with the French shells, and the examination 

 of a longer series of specimens than that to which Mr. Sowerby had access, shows that 

 individuals occur here, as well as in France, having the spire considerably produced 

 (fig. 6 a). 



