Microvoluta marginata is a species of medium-sized sea snail, a marine gastropod mollusc in the family Volutomitridae, the mitres.
The length of the shell attains 6mm.
It is only known to occur in ManawatÃÂwhi / Three Kings Islands,North Island,Stewart Island,Southern south island and Mernoo bank in the country of New Zealand.
Their anatomy is noted to be Height 8mm and Width 3.5mm .