Allolobophora brunescens Bretscher, 1900 (original description)
Allolobophora pallida Bretscher, 1900 (original description)
Allolobophora rosea (Savigny in Cuvier, 1826) accepted as Aporrectodea rosea (Savigny in Cuvier, 1826) (additional source)
Buchholzia parva Bretscher, 1900 (original description)
Chaetogaster langi Bretscher, 1896 (additional source)
Enchytraeus nigrina Bretscher, 1900 accepted as Marionina nigrina (Bretscher, 1900) (original description)
Enchytraeus silvestris Bretscher, 1900 (original description)
Enchytraeus turicensis Bretscher, 1899 (additional source)
Fridericia alpinula Bretscher, 1900 (original description)
Fridericia auriculata Bretscher, 1900 (original description)
Fridericia beddardi Bretscher, 1900 accepted as Fridericia ratzeli (Eisen, 1872) (original description)
Fridericia fruttensis Bretscher, 1900 (original description)
Fridericia humicola Bretscher, 1900 (original description)
Fridericia minuta Bretscher, 1900 (original description)
Fridericia terrestris Bretscher, 1900 (original description)
Fridericia udei Bretscher, 1899 accepted as Fridericia galba (Hoffmeister, 1843) (additional source)
Haemonais Bretscher, 1900 (original description)
Haemonais waldvogeli Bretscher, 1900 (original description)
Henlea pratorum Bretscher, 1900 accepted as Buchholzia pratorum (Bretscher, 1900) (original description)
Henlea stolli Bretscher, 1900 (original description)
Henlea sulcata Bretscher, 1900 (original description)
Marionina lobata (Bretscher, 1899) (new combination reference)
Mesenchytraeus monochaetus Bretscher, 1900 (original description)
Naidium luteum Schmidt, 1847 accepted as Pristina (Pristinella) rosea (Piguet, 1906) (additional source)
Naidium uniseta Bretscher, 1900 accepted as Pristina (Pristinella) bilobata (Bretscher, 1903) (original description)
Pachydrilus lobatus Bretscher, 1899 accepted as Marionina lobata (Bretscher, 1899) (new combination reference)
Pachydrilus sphagnetorum Vejdovský, 1878 accepted as Chamaedrilus sphagnetorum (Vejdovský, 1878) accepted as Cognettia sphagnetorum (Veydovsky, 1878) (additional source)
Stylodrilus vejdovskyi Benham, 1891 accepted as Stylodrilus heringianus Claparède, 1862 (additional source)
Tubifex alpinus Bretscher, 1900 accepted as Tubifex tubifex (Müller, 1774) (original description)
Tubifex heuscheri Bretscher, 1900 accepted as Potamothrix heuscheri (Bretscher, 1900) (original description)

Switzerland for Buchholzia parva Bretscher, 1900 
Switzerland for Enchytraeus nigrina Bretscher, 1900 
Switzerland for Haemonais waldvogeli Bretscher, 1900 
Switzerland for Limnodrilus udekemianus Claparède, 1862 
Switzerland for Marionina riparia Bretscher, 1899 
Switzerland for Mesenchytraeus monochaetus Bretscher, 1900 
Switzerland for Naidium luteum Schmidt, 1847 
Switzerland for Nais appendiculata d'Udekem, 1855 
Switzerland for Nais barbata Müller, 1774 
Switzerland for Nais elinguis Müller, 1774 
Switzerland for Nais lurida Timm, 1883 
Switzerland for Pachydrilus lineatus (Müller, 1774) 
Switzerland for Pachydrilus sphagnetorum Vejdovský, 1878 
Switzerland for Pristina equiseta Bourne, 1891 
Switzerland for Pristina longiseta Ehrenberg, 1831 
Switzerland for Tubifex alpinus Bretscher, 1900 
Switzerland for Tubifex heuscheri Bretscher, 1900 

 Etymology

 for Haemonais waldvogeli Bretscher, 1900

Named after Mr. Waldvogel who send the specimens to Bretscher [details]

 Homonymy

 for Marionina lobata (Southern, 1909)

Bretscher (1900) moved his Pachydrilus lobatus to Marionina. So Marionia lobata (Southern) is a junior homonym [details]

 Type locality

 for Buchholzia parva Bretscher, 1900

kleiner Melchsee [details]

 Type locality

 for Enchytraeus nigrina Bretscher, 1900

No type locality given but described from several Swiss places: "bei Wollishofen und Küsnacht am Zurichsee, am ... [details]

 Type locality

 for Mesenchytraeus monochaetus Bretscher, 1900

Katzensee, in Schilfmoder am Ufer. [details]

 Type locality

 for Tubifex heuscheri Bretscher, 1900

Described from material collected in Lützelsee and Zûrichsee (Switserland), [details]