BioStor
 | Matériaux pour servir à l'histoire des Hydroïdes. 3ème période (1851-1871) M Bedot (1910) Revue Suisse De Zoologie 18: 189-490 |
 | North American parasitic copepods belonging to the Lernaeidae with a revision of the entire family C B Wilson (1917) Proceedings of the United States National Museum 53: 1-150 |
 | Hydroids and medusae of the family Companulariidae recorded from the eastern north Atlantic, with a world synopsis of genera P F S Cornelius (1982) Bulletin of the British Museum (Natural History) Zoology 42(2): 37-148 |