Halopteris violae Calder, Mallinson, Collins & Hickman, 2003

Calder, D. R. , Mallinson, J. J. , Collins, K. , & Hickman, C. P. 2003. Additions to the hydroids (Cnidaria) of the Galapagos, with a list of species reported from the islands. Journal of Natural History 37: 1173-1218.