Reygel, P.C., Willems, W.R. and Artois, T.J. 2011.

Koinocystididae and Gnathorhynchidae (Platyhelminthes: Rhabdocoela:
Kalyptorhynchia) from the Galapagos, with the description of three new species

. Zootaxa. 3096, 1 (Nov. 2011), 27–40. DOI:https://doi.org/10.11646/zootaxa.3096.1.3.