PULMONATA. 141 
shell is, however, narrower and slenderer, somewhat resembling J/. hordeola in shape, 
but more regularly fusiform. One of the specimens has the outer lip thickened and 
margined, and it appears therefore, to have attained maturity ; but the posterior sinus 
characteristic of this group and which is so strongly marked in JZ. bifido-plicata, is 
wanting, and is represented by an obscure, scarcely perceptible channel at the suture. 
The lip itself is not involute as in JZ. hordeola, but is simply thickened, and the front is 
round, not flattened, as in JZ. bifido-plicata. 
The specimen figured is from Mr. D’Urban’s cabinet. 
Size—Axis, 2-10ths of an inch; diameter, rather less than 1-10th of an inch. 
Locality —Barton, where it is scarce. 
Marginella dentifera. (Lamarck.) This species is recorded in the list of ‘“ The 
Fossils of Bracklesham and Selsey,” published in Mr. Dixon’s ‘ Geology, §c., of Sussex,’ 
p- 107, onthe authority of a specimen which formed part of my collection, but which, 
unfortunately, has been broken: I am not aware that any other individual has been 
found. The species is very rare in France; and as Mr. Sowerby, by whom the list was 
prepared, did not himself see the specimen, the identification cannot be relied on ; 
I have therefore not included JZ. dentifera among the English eocene Marginelle. 
Section B. Spire concealed or nearly so. 
No. 83. MARGINELLA OVULATA. Lamarck. Tab. XVIII, figs. 5 a—e. 
MarGIneLia ovurata, Lamk. 1803. Ann. du Mus., vol. ii, p. 61; vol. vi, t. 44, fig. 10. 
— — Roissy. 1804. Buff. Moll., vol. vi, p. 10, No. 6. 
= — Lamk. 1822. Hist. nat., vol. vu, p. 359, No 17. 
— — Defr. 1823. Dict. des sci. nat., vol. xxix, p. 145. 
— — Desh. 1824-37. Desc. des coq. foss., &c., vol. ii, p. 707, t. 94 
bis, figs. 27—29. 
_ — Desh. 1830. Enc. méth. (Vers), vol. ii, p. 416, No. 20. 
a — Bronn. 1831. Ital. Tertiargeb., p. 18, No. 52. 
= — Bronn. 1838. Leth. geog., p. 1106, t. 42, fig. 44. 
— — J. Sow. 1850. Dixon’s Geol., &c., of Sussex, p. 107, t. 7, fig. 38. 
— — ? Beyrich. 1853. Die Conchylien des Norddeutschen tert., vol. i, 
p- 49, t. 2, fig. 10a—é. 
mittacEA? Philippi. 1851. Paleeontographica (Tert. foss. Magd.), vol. i, p. 79, 
No. 177. 
Nec. — ovuLaTa, Grat. 1838. Cat. Zool., &c.. de la Gironde, p. 50, No 481. 
nec. — — Grat. 1845. Conchy. foss., &c., de Adour, t. 1, fig. 35. 
nec. — — Sism. 1847. Syn. meth., &c., Pedemont. foss., p. 46. 
M. testa ovato-oblongd, ad basin late emarginatd ; spird brevissima : apertura elongato- 
