Thylacodes squamigerus, common name the scaled wormsnail, is a species of sea snail, a marine gastropod mollusk in the family Vermetidae, the worm snails. This species was previously known as Serpulorbis squamigerus.

This worm snail lives along the Pacific coast of North America, south of Monterey. This species is often cemented into colonies and is a uniquely sedentary snail. It has no operculum.