Achaeta incisa Friend, 1913 (original description)
Allurus mollis Friend, 1913 accepted as Eiseniella tetraedra (Savigny in Cuvier, 1826) (original description)
Fridericia densa Friend, 1913 (original description)
Fridericia lobifera minor Friend, 1913 (original description)
Fridericia rotunda Friend, 1913 accepted as Fridericia ratzeli (Eisen, 1872) (original description)
Helodrilus oculatus Hoffmeister, 1845 (additional source)
Henlea dicksoni multispinus Friend, 1913 accepted as Henlea ventriculosa (d'Udekem, 1854) (original description)
Henlea mariona Friend, 1913 (original description)
Henlea parva Friend, 1913 (additional source)
Henlea rhaetica multisetosus Friend, 1913 (original description)
Ilyodrilus glandulosus Friend, 1912 (additional source)
Limnodrilus aurantiacus Friend, 1911 accepted as Limnodrilus hoffmeisteri f. spiralis (Eisen, 1879) (additional source)
Nais elinguis Müller, 1774 (additional source)
Octolasium cyaneum (Savigny in Cuvier, 1826) accepted as Octolasion cyaneum (Savigny in Cuvier, 1826) (additional source)

 Homonymy

 for Henlea parva Friend, 1913

This is also a junior homonym for Henlea parva Cejka, 1912 but it is unclear what species status both have [details]

 Nomenclature

 for Fridericia lobifera minor Friend, 1913

Originally named as Fridericia lobifera var. minor, and this infrasubspecific name automatically becomes a ... [details]

 Nomenclature

 for Henlea rhaetica multisetosus Friend, 1913

Originally named as Henlea rhaetica var. multisetosus, and this infrasubspecific name automatically becomes a ... [details]