1. Species Creseis acicula (Rang, 1828)
2. Species Creseis conica Eschscholtz, 1829
3. Species Creseis virgula (Rang, 1828)
4. Subgenus Creseis (Boasia) Dall, 1889 accepted as Boasia Dall, 1889 (original rank)
5. Species Creseis acus Eschscholtz, 1829 accepted as Creseis clava (Rang, 1828) accepted as Creseis acicula (Rang, 1828) (unaccepted > junior subjective synonym, synonym)
6. Species Creseis annulata Deshayes, 1853 accepted as Hyalocylis striata (Rang, 1828) (synonym)
7. Species Creseis bulgia Sakthivel, 1974 accepted as Creseis chierchiae (Boas, 1886) accepted as Boasia chierchiae (Boas, 1886)
8. Species Creseis caliciformis Meisenheimer, 1905 accepted as Cuvierina columnella (Rang, 1827)
9. Species Creseis caligula Eschscholtz, 1829 accepted as Creseis virgula (Rang, 1828) (synonym)
10. Species Creseis chierchiae (Boas, 1886) accepted as Boasia chierchiae (Boas, 1886) (unaccepted > superseded combination)
11. Species Creseis clava (Rang, 1828) accepted as Creseis acicula (Rang, 1828)
12. Species Creseis compressa Eschscholtz, 1829 accepted as Hyalocylis striata (Rang, 1828)
13. Species Creseis corniformis (A. d'Orbigny, 1836) accepted as Creseis virgula (Rang, 1828)
14. Species Creseis cornucopiae Eschscholtz, 1829 accepted as Creseis virgula (Rang, 1828) (synonym)
15. Species Creseis recta (Gray, 1850) accepted as Creseis clava (Rang, 1828) accepted as Creseis acicula (Rang, 1828) (synonym)
16. Species Creseis rotunda G. B. Sowerby II, 1877 accepted as Creseis conica Eschscholtz, 1829
17. Species Creseis rugulosa (R. A. Philippi, 1836) accepted as Caecum trachea (Montagu, 1803)
18. Species Creseis rugulosa Cantraine, 1841 accepted as Hyalocylis striata (Rang, 1828) (dubious synonym)
19. Species Creseis spinifera Rang, 1828 accepted as Styliola subula (Quoy & Gaimard, 1827)
20. Species Creseis spiniformis Benoit, 1843 accepted as Creseis acicula (Rang, 1828) (unaccepted > junior subjective synonym)
21. Species Creseis sulcata Benoit, 1843 accepted as Hyalocylis striata (Rang, 1828) (unaccepted > junior subjective synonym)
22. Species Creseis unguis Eschscholtz, 1829 accepted as Creseis virgula (Rang, 1828) (synonym)
23. Species Creseis virgulata Locard, 1886 accepted as Creseis virgula (Rang, 1828) (synonym)
24. Species Creseis zonata Delle Chiaje, 1830 accepted as Hyalocylis striata (Rang, 1828)
25. Species Creseis conica A. Costa, 1869 (uncertain > taxon inquirendum, invalid; not Eschscholtz, 1829)
26. Species Creseis monotis Troschel, 1854 (uncertain > nomen dubium, very juvenile Cavolinia species)
27. Species Creseis phaeostoma Troschel, 1854 (uncertain > nomen dubium, very juvenile Cavolinia species)

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