1. Species Helix (Jacosta) amphiconus Maltzan, 1883 accepted as Xerocrassa amphiconus (Maltzan, 1883) (original combination)
2. Species Helix (Jacosta) aspasta Westerlund, 1896 accepted as Fruticicola cavimargo (E. von Martens, 1879) (unaccepted > junior subjective synonym)
3. Species Helix (Jacosta) euphacodes Maltzan, 1883 accepted as Xerocrassa siderensis (Maltzan, 1883) (junior synonym)
4. Species Helix (Jacosta) fallaciosa A. Férussac, 1832 accepted as Trachia fallaciosa (A. Férussac, 1832) (unaccepted > superseded combination)
5. Species Helix (Jacosta) gautieri Germain, 1908 accepted as Xerophila gautieri (Germain, 1908)
6. Species Helix (Jacosta) huidobroi Azpeitia, 1925 accepted as Xerotricha huidobroi (Azpeitia, 1925) (unaccepted > superseded combination)
7. Species Helix (Jacosta) moraguesi Kobelt, 1883 accepted as Xerocrassa homeyeri homeyeri (Dohrn & Heynemann, 1862) (unaccepted > junior subjective synonym, original combination)
8. Species Helix (Jacosta) renati Dautzenberg, 1894 accepted as Helicopsis renati (Dautzenberg, 1894) (unaccepted > superseded combination, original name)
9. Species Helix (Jacosta) schelkovnikovi Bogachev, 1936 † accepted as Kalitinaia perspectiva Hausdorf, 1993 (unaccepted > junior homonym, A primary homonym of Helix schelkovnikovi Rosen, 1914)
10. Species Helix (Jacosta) siderensis Maltzan, 1883 accepted as Xerocrassa siderensis (Maltzan, 1883) (original combination)
11. Species Helix (Jacosta) siphnica Kobelt, 1883 accepted as Xerocrassa siphnica (Kobelt, 1883) (original name)
12. Species Helix (Jacosta) sphakiota Maltzan, 1883 accepted as Xerocrassa mesostena (Westerlund, 1879) (junior synonym)
13. Species Helix (Jacosta) subcalcarata Nägele, 1903 accepted as Helicopsis subcalcarata (Nägele, 1903) (original combination)

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