Lissomphalia bithynoides is a species of sea snail, a marine gastropod mollusk in the family Skeneidae.

[2] The thin, whitish shell is narrowly umbilicated.

Its maximum reported size is 1 mm.

The fine growth lines are crossed by microscopic close-set spiral strife, giving the surface a frosted appearance.

[3] This species occurs in the Atlantic Ocean off Europe and in the Mediterranean Sea.