Stilifer is a genus of small ectoparasitic sea snails that used to belong in the family Stiliferidae.

Most recent sources consider it part of the family Eulimidae, which also belongs to the superfamily Eulimoidea.

[1] "The imperforate, hyaline, thin shell has ab ovoid or elongated shape.

The mantle is reflected upon and more or less surrounding the shell, forming a siphonal lobe on the right side.

The foot is linguiform, narrow and tubular in front, where it extends much beyond the head, attenuated behind, with a median groove below.