Mauidrillia costifer is an extinct species of sea snail, a marine gastropod mollusk in the family Horaiclavidae. Description The length of the shell varies between 7 and 8 mm. Distribution This extinct marine species is endemic to New Zealand References Suter, Henry. Descriptions of New Tertiary Mollusca Occurring in New Zealand Part I. 1917. Maxwell, P.A. (2009). Cenozoic Mollusca. pp. 232–254 in Gordon, D.P. (ed.) New Zealand inventory of biodiversity. Volume one. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. Canterbury University Press, Christchurch External links Revised descriptions of New Zealand Cenozoic Mollusca from Beu and Maxwell (1990): Mauidrillia costifer costifer Gastropods described in 1917