P. lottae has almost only spiral sculpture, a very broad and inflated, but pointed larval shell. The whorls rapidly increase in diameter, but they are rather fiat.
Remarks. The species is easily recognized by the broad outlines, the short aperture, flat whorls and very inflated larval whorls.
The animal is blind and has no operculum. The radula shows that it belongs to something close to Pleurotomella s.s. but we have not seen any genus resembling P. lottae; we provisionally keep it in Pleurotomella.