|Original description||Gooday, A. J., Pawlowski, J., 2004, J. Mar. Biol. Ass. U.K., 84, 919-924 (270 KB)|
|Further reference||Pawlowski, J., Holzmann, M., Berney, C., Fahrni, J., Cedhagen, T., Bowser, S.,S., 2002, J. For. Res., 32, 334-343 (123 KB)|
The test is elongate, tubular, with a smooth outline uninterrupted by irregularities apart from slight fluctuations in width. There is a single terminal aperture.The test is usually more or less straight or slightly curved, occasionally more strongly curved or following asinuous course. It ranges from 340 to 1400 mm in length and 50 to 100 mm in width.