Kylix ianthe is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.

its color is white with touches of brown on the anal fasciole and on the body whorl behind the varix.

The spiral sculpture consists of (on the penultimate whorl 3 or 4) incised lines in front of the periphery.

The incised lines have a more opaque appearance contrasting with the translucent white of the whorls.

[2] This species occurs in the demersal zone of the Pacific Ocean from the Gulf of California, Mexico to Panama