| Reference no. | Description | year | Name used | Page |
|---|---|---|---|---|
| 833 | Ruppert, E.E., R.S. Fox and R.D. Barnes 2004 Invertebrate Zoology. A functional evolutionary approach. 7th Ed. Brooks/Cole, Thomson Learning learning, Inc. 990 p. | 2004 | Halecium incertus | --> |
| 7520 | Peña Cantero, A.L. and J.M. Gilli 2006 Benthic hydroids (Cnidari, Hydrozoa) from off Bouvet island (Antarctic Ocean). Polar Biol. 29:764-771. | 2006 | Halecium incertus | 766 |