pleurotoma

[Pref. pleuro-, and Gr. tomē =a cutting.] Zool. & Palœont.: A genus of Conide. Shell fusiform, spine elevated, canal long and straight, outer lip with a deep slit near the suture, operculum pointed, nucleus apical. Recent species 430, worldwide; fo il 378, from the Chalk onward. pleû-rot-o-mär-1-ą, subst. [Mod. Lat. pleuro tom(a); Lat. fem. sing. adj. suff. -aria.] Zool. & Palæont.: A genus of Haliotidae. Shell solid, few whorled, aperture sub quadrate, with a deep slit in the outer margin. Recent species two, one from deep water in the West Indies. Fo il 400, from the Lower Silurian to the Chalk of this country, Europe, and Australia.