Halopsis ocellata Agassiz, 1863
| LIX.—Report on the Cœlenterata from the intermediate waters of the N. Atlantic, obtained by Mr. George Murray during the cruise of the ‘Oceana’ in 1898 R T Günther (1903) Annals And Magazine of Natural History 11: 420-430 | |
| Matériaux pour servir à l'histoire des Hydroïdes. 3ème période (1851-1871) M Bedot (1910) Revue Suisse De Zoologie 18: 189-490 | |
| Explorations in the Gulf of Maine, July and August, 1912, by the U.S. Fisheries schooner Grampus. Oceanography and notes on the plankton H B Bigelow (1914) Bulletin of The Museum of Comparative Zoology 58: 31-147 | |
| Hydromedusae from the Discovery Collections (1957) Discovery Reports 29: 1-128 |