Aeolosoma venustum Leidy, 1850 (original description)
Enchytraeus socialis Leidy, 1850 (original description)
Lumbriculus limosus Leidy, 1850 accepted as Lumbriculus variegatus (Müller, 1774) (original description)
Nais gracilis Leidy, 1850 accepted as Slavina appendiculata (d'Udekem, 1855) (original description)
Nais rivulosa Leidy, 1850 (original description)
Pristina longiseta Ehrenberg, 1831 represented as Pristina (Pristina) longiseta Ehrenberg, 1831 (additional source)
Strephuris Leidy, 1850 accepted as Tubifex Lamarck, 1816 (original description)
Strephuris agilis Leidy, 1850 accepted as Tubifex tubifex tubifex (Müller, 1774) (original description)

 Etymology

 for Aeolosoma venustum Leidy, 1850

Not stated by the author. The specific epithet venustum is a Latin adjective meaning, 'beautiful', 'elegant' or ... [details]

 Habitat

 for Aeolosoma venustum Leidy, 1850

Among confervae algae, in freshwater ditches. [details]

 Type locality

 for Aeolosoma venustum Leidy, 1850

In freshwater ditches in the suburbs of Philadelphia, Pennsylvania, USA (gazetteer estimate 39.92°, -75.17°). [details]