Leptothyra paucicostata Dall, 1871 (original combination) Homalopoma paucicostatum, common name the few-ribbed dwarf turban, is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Colloniidae.

[1][2] As attested by the epithet, the small, depressed-globose shell of this species has few, prominent spiral ribs.

There are seven to eight lirae on the body whorl, separated by deep grooves, in which incremental strife are evident.

The color of the shell is rusty brown or rose-red, frequently with alternating white spots on the ribs.

[3] This is a fairly common species living at low tide in sand, under rocks and on broken shells in the Pacific Ocean off California.