Echiurus farcimen

Baird, William. (1871). Description of some new species of Annelida and Gephyrea in the collection of the British Museum. <em>The Journal of the Linnean Society of London. Zoology.</em> 11(50): 94–97.

Rice, M. E., Stephen, A. C. (1970). The type specimens of Sipuncula and Echiura described by J. E. Gray and W. Baird in the collections of the British Museum (Natural History). <em>Bulletin of the British Museum (Natural History). Zoology.</em> 20(2): 42–72, plates 1–3.