As Nassarius simplex:
N. simplex. Three syntypes in the B.M.N.H. No. 1879.10.15.190-2.; illustrated syntype 12.4 x 7.5 x 5.3 mm. Light cream in colour, penultimate whorl with 16 axial ribs and 5 spiral rows of nodulose cords, body whorl with 16 ribs, 3 spiral rows of nodulose cords at the shoulder followed by 14 spiral cords, columella with 4 small plicae anteriorly and a parietal fold, aperture liratc. Off the mouth of the Rio de la Plata, Uruguay. 36'47'Sand 55° 17'W, in 28 fathoms (51 m).
Two of the syntypes are immature specimens while the third syntype has been painted with a gold colour. Nassa simplex E. A. Smith, 1880, is a primary homonym of Nassa reticosa var. simplex S. V. Wood, 1872. from the Red Crag of Butley, Pliocene of England, and of Nassa cuvieri var. simplex Seguenza, 1880, a fossil from the Pliocene of Calabria. No substitute name is here proposed for N. simplex (Smith) since the species requires comparison with immature specimens of N. miga (Bruguiere, 1789).