BioStor
 | XXXVI.—Investigations upon some Protozoa August Gruber (1883) Annals And Magazine of Natural History 11: 266-276 |
 | Polyzoa from West Africa. The Malacostega, Part 1 P L Cook (1968) Bulletin of the British Museum (Natural History) 16: 113-160 |
 | Polyzoa from West Africa. The Malacostega. Part 1 (1968) Bulletin of The British Museum (Natural History) Zoology 16: 115-160 |