Pugh, P.R. and Baxter, E.J. 2014.

A review of the physonect siphonophore genera Halistemma (Family Agalmatidae) and Stephanomia (Family Stephanomiidae)

. Zootaxa. 3897, 1 (Dec. 2014), 1–111. DOI:https://doi.org/10.11646/zootaxa.3897.1.1.