| [21958] Elga leptostyla | Appellations de Taxon | 21958 |
| [21959] Ellobiidae | Appellations de Taxon | 21959 |
| [2196] Zingel | Appellations de Taxon | 2196 |
| [21960] Ellobioidea | Appellations de Taxon | 21960 |
| [21961] Ellobium | Appellations de Taxon | 21961 |
| [21962] Ellobium dominicense | Appellations de Taxon | 21962 |
| [21963] Emarginulinae | Appellations de Taxon | 21963 |
| [21964] Engina | Appellations de Taxon | 21964 |
| [21965] Engina turbinella | Appellations de Taxon | 21965 |
| [21966] Ennucula | Appellations de Taxon | 21966 |
| [21967] Ennucula dalmasi | Appellations de Taxon | 21967 |
| [21968] Entemnotrochus | Appellations de Taxon | 21968 |
| [21969] Entemnotrochus adansonianus | Appellations de Taxon | 21969 |
| [2197] Zingel asper | Appellations de Taxon | 2197 |
| [21970] Eogastropoda | Appellations de Taxon | 21970 |
| [21971] Eosipho | Appellations de Taxon | 21971 |
| [21972] Eosipho canetae | Appellations de Taxon | 21972 |
| [21973] Ephemeroidea | Appellations de Taxon | 21973 |
| [21974] Epigomphus hylaeus | Appellations de Taxon | 21974 |
| [21975] Epipleoneura | Appellations de Taxon | 21975 |
| [21976] Epipleoneura fuscaenea | Appellations de Taxon | 21976 |
| [21977] Epipleoneura haroldoi | Appellations de Taxon | 21977 |
| [21978] Epipotoneura nehalennia | Appellations de Taxon | 21978 |
| [21979] Epipleoneura pereirai | Appellations de Taxon | 21979 |
| [2198] Pholidae | Appellations de Taxon | 2198 |
| [21980] Epipleoneura spatulata | Appellations de Taxon | 21980 |
| [21981] Epitoniidae | Appellations de Taxon | 21981 |
| [21982] Epitonioidea | Appellations de Taxon | 21982 |
| [21983] Epitonium | Appellations de Taxon | 21983 |
| [21984] Epitonium albidum | Appellations de Taxon | 21984 |
| [21985] Epitonium xenicima | Appellations de Taxon | 21985 |
| [21986] Eratoidea | Appellations de Taxon | 21986 |
| [21987] Eratoidea margarita | Appellations de Taxon | 21987 |
| [21988] Erosaria | Appellations de Taxon | 21988 |
| [21989] Erosaria acicularis | Appellations de Taxon | 21989 |
| [2199] Pholis | Appellations de Taxon | 2199 |
| [21990] Erosariinae | Appellations de Taxon | 21990 |
| [21991] Erythemis | Appellations de Taxon | 21991 |
| [21992] Erythemis attala | Appellations de Taxon | 21992 |
| [21993] Erythemis credula | Appellations de Taxon | 21993 |
| [21994] Erythemis haematogastra | Appellations de Taxon | 21994 |
| [21995] Erythemis mithroides | Appellations de Taxon | 21995 |
| [21996] Erythemis peruviana | Appellations de Taxon | 21996 |
| [21997] Erythemis plebeja | Appellations de Taxon | 21997 |
| [21998] Erythemis vesiculosa | Appellations de Taxon | 21998 |
| [21999] Erythrodiplax | Appellations de Taxon | 21999 |
| [22] Amphinemura borealis | Appellations de Taxon | 22 |
| [220] Hydropsyche siltalai | Appellations de Taxon | 220 |
| [2200] Pholis gunnellus | Appellations de Taxon | 2200 |
| [22000] Erythrodiplax amazonica | Appellations de Taxon | 22000 |