Some anthoathecate hydroids and limnopolyps (Cnidaria, Hydrozoa) from the Hawaiian archipelago 2590 Author Calder, Dale R. text Zootaxa 2010 2010-08-31 2590 1 1 91 https://biotaxa.org/Zootaxa/article/view/zootaxa.2590.1.1 journal article 10.11646/zootaxa.2590.1.1 1175­5334 Subclass Trachylina Haeckel, 1879 Trachylinae Haeckel, 1879: 2 . Remarks. Trachylina Haeckel, 1879 encompasses the hydrozoan orders Actinulida Swedmark & Teissier, 1959 , Limnomedusae Kramp, 1938 , Narcomedusae Haeckel, 1879 , and Trachymedusae Haeckel, 1879 ( Collins 2000 ; Daly et al. 2007 ; Collins et al. 2008 ). Details on the phylogeny of the group are provided in Collins et al . (2008) .