"Found in a tunnel, probably of Docecaceria or other boring annelid in the spreading form of Lithothamnion between tide marks, St. Peter Port, Guernsey" (McIntosh, 1915: 179).
McIntosh, William Carmichel. (1915). Polychaeta, Opheliidae to Ammocharidae. A Monograph of the British Marine Annelids. The Ray Society, London, 3 (1): i-viii, 1-368 (text). available online athttps://biodiversitylibrary.org/page/38532650