AURICULIDA. 95 
Shell minute, conical-pupiform, very thin, hyaline; whorls not 
numerous; aperture suboval, usually contracted by teeth, one 
or two on the columellar, and frequently one on the outer lip ; 
columella plicate, or plication obsolete. 
Tentacles rather large, cylindrical, obtuse ; foot thick, obtuse 
behind. 
CARYCHIOPSIS, Sandberger. Lip with two interior teeth. (. 
Dohrni, Desh. Fossil. 
Larmoponta, Nuttall. 
Distr.—l0 sp. Polynesia. ZL. Sandwichensis, Soul. (cii, 88). 
Shell oblong-oval, imperforate, thin, with revolving strive ; 
spire elevated-conic; aperture oval; inner lip with three plica- 
tions, the anterior smallest, outer lip sharp, with a transverse 
interior plication. 
Distinguished from Ophicardelus by the internal elevated rib 
of the outer lip. 
Marinvta, King, 1831. 
Distr.—10 sp. Australia, Mediterranean, W. Coast of 
America. J. pepita, King (cii, 89). 
Shell oval-oblong, imperforate, solid, smooth; spire short, 
sharp; aperture oval; inner lip rather thick, excavated with 
three plications, the posterior largest; outer lip simple, sharp. 
Ca@LESTELE, Benson, 1864. 
Syn.—Francesia, Paladilhe, 1872. 
Distr._12 sp. India, Egypt, Arabia, Spain. C. scalaris, 
Benson (cii, 79). 
Shell imperforate, elongate-cylindrical, aperture semiovate ; 
columellar margin with a subspiral plica above; peristome thin. 
Metampvts, Montfort, 1810. 
Syn.—Conovulus, Lam., 1812. 
Distr.—120 sp. Universal, mostly tropical. Fossil. Miocene 
of Touraine. JJ. luteus, Quoy (cii, 80). 
Shell oval-conoidal, or suboval, solid; spire rather short ; 
aperture elongated, narrow; columellar lip with several denti- 
form plications ; columella plicate; outer lip sharp, interior with 
revolving ridges. 
Foot truneated in front, bifid or subbifid behind, divided 
below into two unequal portions by a transverse groove. Jaw 
fibrous, slight, curved, with sharp extremities. Teeth nearly 
horizontal, ‘the central smaller than the laterals—which are tri- 
cuspid, marginals serriform. 
M. bidentatis, Say,is one of the commonest of salt-marsh 
shells on the Atlantic coast of the United States. 
