112 EOCENE MOLLUSCA. 
others occur principally in the West Indies and South America. The two species 
before mentioned, V. elegans (Sow.), and V. depressa (Desh.), are, I believe, the only 
fossil species hitherto described. 
No. 64. VELLETIA ELEGANS. Sowerby. Tab. XIV, fig. 2 a—d. 
ANCYLUS ELEGANS. Sow. 1826. Min. Con., vol. vi, p. 64, t. 533. 
os — Lyell and Murch. 1829. Sur les depéts, &c. du Cantal. 
— _ Bouillet. 1836. Cat. des coq. foss. de Auvergne. 
A. testa convex, subconicd, radiatim subtilissime striatd ; vertice obliquo, excentrico, 
sub-marginali: apertura longitudinal, ob-ovali. 
This elegant shell, for the discovery of which we are indebted to Sir Charles Lyell, 
is convex and subconical, with an oblique excentric vertex, placed near the posterior 
extremity. The surface, under a high magnifying power, presents exceedingly fine 
strie, radiating from the vertex towards the margin; the mucro is frequently eroded. 
The aperture is longitudinal and obovate, the wider part being the anterior extremity. 
The shell, in this species, is not so oblong and compressed as in the recent /. 
/acustris, and the vertex is nearer the margin. In the French species, V. depressa, 
(Desh.) the shell is more depressed, the anterior extremity is wider, the posterior 
extremity 1s narrower, and the vertex is more nearly central. 
Size—KElevation rather more than 1-20th of an inch; length rather more than 
3-20ths ; greatest width 2-20ths. 
Localities —Hordwell. french: Veaurs in the Cantal. 
Family—AvRICULIDS. 
Genus 16th. MeLtampus. Jonffort. 
Vout, (sp.,) Linn. 
Metampus, Montf., 1810; Beck, 1837; Gray, 1840. 
Conovutus, Lam., 1812; Cuvier, 1817; Beck, 1837. 
AuRIcULA, (sp.,) Lam. 
Auexta, Leach, 1819 
Conoyuta, Féruss., 1819. 
Pepires, (sec. C.,) Blainville, 1825. 
Metampus, Lowe, 1832. 
ConovuLum, G. Sowerby, jun., 1841. 
‘Ruopostoma and Metampus, Swain, 1840. 
Gen. Char.—Shell oval or elongate, sub-cylindrical; generally smooth, and with a 
short conoidal spire : aperture rather long and narrow; peritreme continuous, with two 
