Calthalotia strigata is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.

The plane whorls are concave in the middle.

They show at the sutures a prominent rounded ridge, transversely lirate.

The base of the shell is concentrically lirate, with radiating striae in the interstices.

The lip is arcuate, ending anteriorly in an obtuse tooth.