Four body regions (1) anterior tentacular plume on obturaculum; winged vestimentum; trunk; segmented posterior opisthosome. Plume red, with tentacular lamellae perpendicular to axis; paired halves of apical split end forming operculum upon withdrawal into tube. Vestimentum with dorsolateral flaps overlapping one another ventrally. Opisthosome with variable number of segments, ending in rounded posterior tip. Anterior segments completely encircled with paired single rows of chaetae, becoming incomplete posteriorly. Tube white, smooth, flexible, extremely sturdy, essentially cylindrical, basally blind ending. Tube made of a chitin-protein system.
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