Macrorhynchia

Macrorhynchia is a genus of hydroids in the family Aglaopheniidae.

Species
The following species are classified in this genus:
 * Macrorhynchia allmani (Nutting, 1900)
 * Macrorhynchia ambigua Watson, 2000
 * Macrorhynchia asymmetrica Di Camillo, Puce & Bavestrello, 2009
 * Macrorhynchia balei (Nutting, 1905)
 * Macrorhynchia clarkei (Nutting, 1900)
 * Macrorhynchia crestata Schuchert, 2015
 * Macrorhynchia curta (Nutting, 1900)
 * Macrorhynchia disjuncta (Pictet, 1893)
 * Macrorhynchia filamentosa (Lamarck, 1816)
 * Macrorhynchia fulva Di Camillo, Puce & Bavestrello, 2009
 * Macrorhynchia furcata (Nutting, 1900)
 * Macrorhynchia grandis (Clarke, 1879)
 * Macrorhynchia gravelyi Mammen, 1967
 * Macrorhynchia hawaiensis (Nutting, 1906)
 * Macrorhynchia meteor El Beshbeeshy, 1995
 * Macrorhynchia mulderi (Bartlett, 1907)
 * Macrorhynchia nuttingi (Hargitt, 1927)
 * Macrorhynchia philippina Kirchenpauer, 1872
 * Macrorhynchia phoenicea (Busk, 1852)
 * Macrorhynchia protecta (Antsulevich, 1992)
 * Macrorhynchia quadriarmata Watson, 2000
 * Macrorhynchia racemifera (Allman, 1883)
 * Macrorhynchia ramosa (Fewkes, 1881)
 * Macrorhynchia similis (Nutting, 1906)
 * Macrorhynchia singularis (Billard, 1908)
 * Macrorhynchia spiralis  (Galea, 2020)