[ page update: 2021-I-18 ; 2024-II-17; mjw]
xanthurus, Lumbricus Templeton, 1836; Mag. Nat. Hist. 9: 235; typus amissus. [N.O., p. 191]
xanthus, Megascolides Blakemore, 2000; Tasmanian Earthworms, p. 267; QVMA 14: 3104, 3731,
0286, 1022; ANIC.RB. 98.1.10-11; TMHA 1565.
xaropi, Andiodrilus Righi, 1996; Stud. Trop. Andean Ecosystems 4(16): 559; ICNB An041, RNHL 121081.
xavieri, Ocnerodrilus Eisen, 1900; Enicmodrilus; Proc. Calif. Acad. Sci. (3), 2: 120. [N.O., p. 191];
vide santi ss. Ocnerodrilus xaviere Eisen, 1900; delete in N.O. p. 191. [N.O.S.P., p. 35]
xayi, Amynthas Hong et James, 2024; Zootaxa 5405 (2): 276; Holotype: BDNUL 0057; paratypes: BDNUL 0058, 0059; ZooBank.^
xeabaibus, Rhinodrilus Righi, 1969; Beit. Neotrop. Fauna 5: 155; DZSP 149. [N.O., p. 191]
xecatu, Amazo Righi, Ayres et Bittencourt, 1978; Acta Amaz., Suppl. 1, 8(3); 16; INPA INPAZ-85.
[N.O.S.P., p. 29] ^
xepe, Diachaeta Righi, 1992; Soil Biol. Biochem. 24(12): 1229; DZSP ZU-1238.
xuanlocensis, Metaphire T.T. Nguyen & Lam, 2017; Tap chi Sinh hoc 39(4): 412; CTU-EW.086.h01;
paratypes: CTU-EW.086.p02; zooBank.^
xylocerasi, Norana Marchán, Fernández, Díaz Cosín et Novo, 2018; Zootaxa 4496(1): 83;
Holotype: UCMLT 00220; paratypes: 00221, 00385–00387; ZooBank; molecular data and
Genbank accession numbers provided in the publication. ^