Conotalopia henniana is a species of very small sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
The height of the shell attains 3.25 mm, its diameter 4.5 mm. The red-brown shell has a depressed-conical shape and is profoundly umbilicated. The five whorls show a microscopic sculpture of fine radial threads that overrun the spirals and are more apparent on the base. In colour it is variable, the figured example has walnut-brown radial flames on a grey ground, in others the flames are brick red and in some the flames break up into small chequers.
This marine species is endemic to Australia and occurs on sandy beaches off Queensland.
