Glessula nagarjunensis Budha & Naggs, 2017
Obeliscus nanus F. Haas, 1951
Glessula neglecta G.P.L.K. Gude India, Western Ghats
Thomea newtoni A.A.A. Girard, 1894 Sao Tomè Island
Glessula nitens (J.E. Gray, 1825) Sri Lanka18 mm
Oreohomorus nitida (E.C. Von Martens, 1897)
Chilonopsis nonpareil G. Perry
Opeas nothapalinus B. Verdcourt
Glessula notigena (W.H. Benson, 1856) Bangladesh
Opeas nutans (P.V. Gredler, 1887) JiangXi, China30 mm
Curvella nyasana E.A. Smith, 1899 Mozambique
Obeliscus obeliscus (S. Moricand, 1833) Brazil, Pernambuco112 mm
Stenogyra octogyra (L. Pfeiffer, 1856) Guyana8 mm
Subulina octona (J.G. Bruguière, 1792) Philippines, Cebu17 mm
Opeas opella H.A. Pilsbry& E.G. Vanatta, 1906 Brazil
Opeas operanum (L. Pfeiffer, 1846) Hawaii
Curvella orani E. Fischer-Piette & al.,1994 Madagascar, Majunga7,5 mm
Subulona ordinaria H.B. Preston, 1910
Glessula oreas (L.A. Reeve, 1850) India, Cuddalore
Glessula orobia (W.H. Benson, 1856) Sri Lanka
Glessula orophila (L.A. Reeve, 1849) India, Cuddalore
Bacillum orthoceras (H.H. Godwin-Austen) India, Naga Hills
Leptinaria orysa (J.G. Bruguière, 1789) Brazil6 mm
Homorus osborni H.A. Pilsbry, 1919 Congo
Curvella ovata (S. Putzeys, 1899) Uganda5,6 mm
Obeliscus owengriffithsi Thach & F. Huber, 2017
Glessula pachycheila (W.H. Benson, 1853) Sri Lanka
Glessula pachycheila taprobanica H.A. Pilsbry, 1908 Sri Lanka
Lamellaxis pachyspira H.A. Pilsbry, 1905 Venezuela
Prosopeas paioense F.S. Bock, 1881 Indonesia, Sumatra
Rumina paivae R.T. Lowe, 1861 Algiers
Glessula pallens R.H. Beddome, 1906 Sri Lanka
Lamellaxis pallidus (C.B. Adams, 1845) Jamaica
Leptinaria paludinoides (A.V.M.D. D'Orbigny,1842) Cuba
Glessula panaetha (W.H. Benson, 1860) Sri Lanka