Trilirata macmurdensis is a species of predatory sea snail, a marine gastropod mollusk in the family Zerotulidae.
The maximum recorded shell length is 2.5 mm.
Minimum recorded depth is 270 m. Maximum recorded depth is 280 m.
It's distribution appears restricted to the Southern Ocean.
The mollusk was first described by British-born naturalist Charles Hedley in 1911, from specimens recovered from the British Antarctic Expedition (1907âÂÂ1909)