Family Tubificidae Vejdovský, 1876 - sludge worms see Family Naididae Ehrenberg, 1828 Genus Peloscolex Leidy, 1851 1 Peloscolex arganoi Pop, 1974, nom. dub. 2 Peloscolex boitanii Pop, 1974, nom. dub. 3 Peloscolex cottarellii Pop, 1974, nom. dub.