Orrmaesia ancilla is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.Sartori, André F. (2015). Orrmaesia ancilla (Thiele, 1925). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=762258 on 2016-10-26
Distribution This species occurs in the demersal zone of the Indian Ocean off the Agulhas Bank and the Eastern Cape, South Africa
References
Thiele (1925) Gastropoden der Deutschen Tiefsee-Expedition. In:. Wissenschaftliche Ergebnisse der Deutschen Tiefsee-Expedition II. Teil, vol. 17, No. 2, Gutstav Fischer, Berlin Tucker, J.K. 2004 Catalog of recent and fossil turrids (Mollusca: Gastropoda). Zootaxa 682:1–1295