Splendrillia runcinata is a species of sea snail, a marine gastropod mollusk in the family Drilliidae. == Description == The length of the shell attains 9 mm, its diameter 3.2 mm. == Distribution == This marine species is endemic to New Zealand and occurs off the Chatham Islands. == References == Dell, Richard Kenneth. The archibenthal mollusca of New Zealand. Dominion Museum, 1956. Powell, A.W.B. 1979: New Zealand Mollusca: Marine, Land and Freshwater Shells, Collins, Auckland == External links == "Splendrillia (Splendrillia) jacula". Gastropods.com. Retrieved 16 January 2019. Tucker, J.K. 2004 Catalog of recent and fossil turrids (Mollusca: Gastropoda). Zootaxa 682:1–1295. Spencer H.G., Willan R.C., Marshall B.A. & Murray T.J. (2011). Checklist of the Recent Mollusca Recorded from the New Zealand Exclusive Economic Zone