Gadinia conica Angas, 1867 Gadinalea conica Amalthea hexagona Suter, 1906 Hipponix hexagonus (Suter, 1913) Hipponix hexagonus Powell, 1924 Trimusculus conicus[1] is an air-breathing sea snail or false limpet, a pulmonate gastropod mollusc in the family Trimusculidae, the button snails.

This species is endemic to eastern and southern Australia, and New Zealand[2] including the Chatham Islands.

The shell is ovate, conoidal, generally depressed, radiately ribbed, apex rather posterior.

The sculpture consists of about 40 subequal narrowly rounded straight riblets, some of which do not extend to the summit.

The apex is subcentral to nearly marginal, small and distinctly uncinate in well-preserved specimens; anterior and side slopes convex, posterior slope straight, concave, or lightly convex.