Daphnella bastowi Gatliff & Gabriel, 1908 Asperdaphne bastowi is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.

(Original description) The small, greyish white shell contains 5½ whorls.

The apex is dome-shaped, consisting of two whorls, the first being very small.

These ribs terminate a little below the suture, the intervening space carrying rather closely set angularly bent threads.

Under the microscope these are thickened at the base and sharp at the edge, resembling a propeller blade, their contour following the outline of the sinus.