1. Species Meckelia annulata
2. Species Meckelia asulcata McIntosh, 1874
3. Species Meckelia cerebratulus
4. Species Meckelia olivacea sensu Rathke, 1843
5. Species Meckelia albo-vittata Simpson, 1855 accepted as Notospermus albovittatus (Stimpson, 1855) (synonym)
6. Species Meckelia aurantiaca Grube, 1855 accepted as Leucocephalonemertes aurantiaca (Grube, 1855) (synonym)
7. Species Meckelia borealis Diesing, 1862 accepted as Cerebratulus borealis (Diesing, 1862) (basionym)
8. Species Meckelia capensis Diesing, 1862 accepted as Meckelia macrorrhochma Schmarda, 1859 accepted as Cerebratulus macrorrhochmus (Schmarda, 1859) (Synonym)
9. Species Meckelia depressa accepted as Cerebratulus depressus Quatrefages, 1846 (synonym)
10. Species Meckelia erythrorochma accepted as Cerebratulus erythrorochma Joubin, 1902 (synonym)
11. Species Meckelia fasciata accepted as Cerebratulus fasciatus Stimpson, 1857 accepted as Notospermus geniculatus (Delle Chiaje, 1822) (synonym)
12. Species Meckelia fasciatus accepted as Cerebratulus fasciatus Stimpson, 1857 accepted as Notospermus geniculatus (Delle Chiaje, 1822) (synonym)
13. Species Meckelia fusca (Fabricius, 1780) accepted as Nemertes fusca (Fabricius, 1780) accepted as Lineus ruber (Müller, 1774) (synonym)
14. Species Meckelia ingens accepted as Cerebratulus lacteus (Leidy, 1851) (synonym)
15. Species Meckelia knerii Diesing, 1850 accepted as Cerebratulus knerii (Diesing, 1850) accepted as Notospermus geniculatus (Delle Chiaje, 1822) (basionym)
16. Species Meckelia lactea Leidy, 1851 accepted as Cerebratulus lacteus (Leidy, 1851) (basionym)
17. Species Meckelia leuckarti accepted as Cerebratulus annellatus (Leuckart, 1849) (synonym)
18. Species Meckelia ligurica accepted as Cerebratulus liguricus Blanchard, 1849 (synonym)
19. Species Meckelia lizziae accepted as Cerebratulus lacteus (Leidy, 1851) (synonym)
20. Species Meckelia macrorrhochma Schmarda, 1859 accepted as Cerebratulus macrorrhochmus (Schmarda, 1859) (basionym)
21. Species Meckelia nigra Stimpson, 1855 accepted as Cerebratulus nigrus (Stimpson, 1855) accepted as Dushia nigra (Stimpson, 1855) (New Combination)
22. Species Meckelia piperata Stimpson, 1855 accepted as Iwatanemertes piperata (Stimpson, 1855) (New Combination)
23. Species Meckelia pocohontas accepted as Cerebratulus lacteus (Leidy, 1851) (synonym)
24. Species Meckelia trilineata accepted as Tubulanus annulatus (Montagu, 1804) (synonym)
25. Species Meckelia urticans Müller, 1854 accepted as Cerebratulus urticans (Müller, 1854) (basionym)
26. Species Meckelia atra Girard, 1851 accepted as Dushia atra (Girard, 1851) sensu Girard, 1851 (uncertain > nomen dubium)

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