94 AURICULID^. 



tide may be noticed crawling on tlie sands in nearly two fathoms 

 of water. 



SoARABUs, Montfort, 1810. 



^^n.— Pythia,Bolten ? n98. Polyodonta, Fischer, ISOt. Stri- 

 gula, Perry, 1811. 



Dutr. — 48 sp. India, East Indies, Philippines, Australasia. 

 S. Lessso7ii, Bl. (cii, 73). S. 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. 



Plecotrema, H. and A. Adams, 1853. 



Syn. — Lirator, Beck ? 1837. 



Bistr — 27 sp. Red Sea, East Indies, Philippines, Australia 

 to Sandwich Islands. F. clausa, Ad. (cii, 75). 



Shell oval-conic or subfnsiform, solid, usually spirally grooved ; 

 spire conical, sharp ; aperture oblong, contracted ; columellar 

 lip with three plicae, one of which is bifid ; peristome thickened, 

 usually varicose, bidentate or tridentate within. 



Alexia, 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 ; ej'es at their internal base ; foot elongated, 

 obtuse, without transverse division. 



MONICA, H. and A. Adams, 1855. Shell oblong-conic, spire 

 elevated ; whorls with revolving striae ; inner lip rather thick, 

 with three dentiform plications. European. A. Firmini, Payr. 

 (cii, 93). 



TRALiOPSis, Sandberger. Columellar wall biplicate, base of 

 columella triplicate, lip denticulated within. A. dentiens, Desh. 

 Fossil. Basin of Paris. 



Carychium, Mtiller, 1774. 

 Syn. — Saraphia, Risso, 1826. Auricella, Jurine, 1817. 

 JDistr. — 15 sp. Europe, Africa, United States. Fossil. Jur- 

 assic — . C. minimum, Miill. (cii, 77, 78). 



