大理石芋螺（学名：Conus marmoreus）。英文俗名：Marble Cone。

尺寸从中等到大，稍坚实到重。来自于新喀里多尼亚的比其它地方的小；form suffusus也比别的form轻；体螺层圆锥形，form crosseanus最宽；轮廓总体直，靠近上部的部分略微凸起。肩部呈角状，强的结节到几乎光滑。螺塔呈低到相当高，轮廓从直到轻微凹。次体螺层有从强到弱的结节。成年壳体最后一层缝合线下的斜坡呈凹陷，带有2-4个弱的螺旋方向凹槽和线，螺旋的雕刻经常磨损。体螺层靠近底部四分之一到二分之一的地方通常带有弱的等距的螺旋肋。

Conus marmoreus, common name the "marbled cone", is a species of predatory sea snail, a marine gastropod mollusk in the family Conidae, the cone snails, cone shells or cones. It is the type species for the Conus genus. This is a species which is believed to feed mostly on marine molluscs including other cone snails. This snail is venomous, like all cone snails.