Monoceros paucilirata: Stearns. Shell moderately elevated, whorls 4-6; body whorl four-fifths the total length, angulated above and excavated between the angle and the suture; a sharp groove behind the tooth. Upper whorls cancellated, nucleus smooth. Aperture elongate, purple brown in the throat; outer lip sharp, yellowish, internally denticulated, with a prominent tooth at its outer edge. Columella purple, canal short, umbilicus nearly covered by the columellar callus. Siphonal fasciole strong. Externally painted with longitudinal broad black and narrow whitish streaks, inter- rupted by the white dental groove and three or four narrow yellowish revolving carinæ, which, except the keel, are inconspicuously elevated. Lon. .55; Lat Hemphill, three .33 in. Habitat-Coronado Islands, off San. Diego, California. specimens.