Only found once, in low densities.
Prostomium notched. Caruncle to mid chaetiger 2. No occipital tentacle. 2 pairs of eyes, anterior pair larger. Cream in life, some dark pigmentation at base of notopodial chaetigers 6 -16, black markings on ventral surface between chaetigers 1 & 2. Branchiae short and stubby. Glandular sacs in chaetigers 7 – 17.
Found on farmed oysters, Crassostrea gigas.