Reibisch, Phyllodociden u. Typhloscoleciden d. Plankton Exped. 1895.
The British species is usually referred to as C. insignis Baird, but Joyeux Laffuie (Arch. Zool. Exp. (ser. 2) viii. 1890, p. 244) has shown that there is only one European species. It is possible that there is a closer affinity with the Sabelliformia than is at present supposed.
Compare Sternaspis, p. 336.
For literature, see Benham, Quart. J. Micr. Sci. xxxix. part 1, 1896, p. 1.
F. Buchanan, Quart. J. Micr. Sci. xxxi. 1890, p. 175.