Aglaophenia trifida Agassiz, 1862 (taxonomy source)
Antennella gracilis Allman, 1877 (status source)
Campanularia macroscypha Allman, 1877 (redescription)
Halopteris alternata (Nutting, 1900) (redescription)
Hebellopsis brochi Hadzi, 1913 accepted as Hebella brochii (Hadzi, 1913) (status source)
Hebellopsis brochii Hadzi, 1913 accepted as Hebella brochii (Hadzi, 1913) (status source)
Lafoea intorta Calder, 2013 (original description)
Lovenella grandis Nutting, 1901 (redescription)
Macrorhynchia clarkei (Nutting, 1900) (additional source)
Obelia oxydentata Stechow, 1914 (additional source)
Orthopyxis sargassicola (Nutting, 1915) (redescription)
Parawrightia robusta Warren, 1907 (redescription)
Pasya quadridentata (Ellis & Solander, 1786) accepted as Dynamena quadridentata (Ellis & Solander, 1786) (basis of record)
Plumularia floridana Nutting, 1900 (redescription)
Symmetroscyphus intermedius (Congdon, 1907) (redescription)
Tridentata loculosa (Busk, 1852) (additional source)

Holbox for Eudendrium distichum Clarke, 1879 

English black bush hydroid for Macrorhynchia clarkei (Nutting, 1900)

 Spelling

 for Sertularia desmoidis Torrey, 1902

The specific name desmoidis deemed to be an incorrect original spelling (ICZN Art. 33.2.3.1) and emended by Nutting ... [details]

 Taxonomic remark

 for Sertularia desmoides Torrey, 1902

The original specific epithet desmoidis is deemed to be an incorrect original spelling (ICZN Art. 33.2.3.1) and ... [details]

 Type locality

 for Eudendrium distichum Clarke, 1879

Caribbean Sea, Mexico, Yucatan, Isla Holbox (Calder, 2013) [details]