94 AURICULIDA. 
tide may be noticed crawling on the sands in nearly two fathoms 
of water. 
ScaraBus, Montfort, 1810. 
Syn.—Pythia, Bolten ? 1798. Polyodonta, Fischer, 1807. Stri- 
cula, Perry, 1811. 
Distr.—48 sp. India, East Indies, Philippines, Australasia. 
S. Lesssont, Bl. (cii, 73). 8. trigonus, Trosch. (cii, 74). 
Shell oval, laterally compressed; spire sharp, conoidal; all 
the whorls with varices upon the narrow, angulated sides; 
umbilicus rimate ; aperture exteriorly large, reflected, interiorly 
much contracted by laminated lips on both sides, the edges of 
which are toothed. Foot oval, not bifid behind. Terrestrial, 
living in woods near the shores, and loving darkness ; only active 
after a rain; ovipositing on the trunks of trees. 
PrecoTreMA, H. and A. Adams, 1853. 
Syn.—Lirator, Beck ? 1837. 
Distr.—27 sp. Red Sea, East Indies, Philippines, Australia 
to Sandwich Islands. VP. clausa, Ad. (cii, 75). 
Shell oval-conic or subfusiform, solid, usually spirally grooved ; 
spire conical, sharp; aperture oblong, contracted ; columellar 
lip with three plicze, one of which is bifid ; peristome thickened, 
usually varicose, bidentate or tridentate within. 
ALExTA, Leach, Gray, 1847. 
Syn.—Phytia, Gray, 1821. Ovatella, Moquin-Tandon, 1847. 
Distr.—21 sp. United States, West Indies, Madeira, Europe. 
A, denticulata, Mont. (cii, 76). 
Shell oblong-oval, thin, spire acuminate; last whorl large, 
rounded at base; columella with an oblique plait; aperture 
contracted by teeth, and sometimes by a callosity of the outer 
lip. 
Tentacles cylindrical, swollen near their extremities, which 
are pigmented; eyes at their internal base; foot elongated, 
obtuse, without transverse division. 
MoNIcCA, H. and A. Adams, 1855. Shell oblong-conic, spire 
elevated; whorls with revolving strive; inner lip rather thick, 
with three dentiform plications. European. <A. /irmini, Payr. 
(cii, 93). 
TRALIOPSIS, Sandberger. Columellar wall biplicate, base of 
columella triplicate, lip denticulated within. A. dentiens, Desh. 
Fossil. Basin of Paris. 
CarycutuM, Muller, 1774. 
Syn.—Saraphia, Risso, 1826. Auricella, Jurine, 1817. 
Distr.—15 sp. Europe, Africa, United States. Fossil. Jur- 
assic—. C. minimum, Mull. (cil, 77, 78). 
