Ceylonthelphusa alpina Bahir & Ng, 2005 [B1ab(iii)] Ceylonthelphusa armata (Ng, 1995) [B1ab(iii)] . . . . . . . . Ceylonthelphusa callista (Ng, 1995) [B1ab(iii)] Ceylonthelphusa cavatrix (Bahir, 1998) [B1ab(iii),D2]
Ceylonthelphusa diva Bahir & Ng, 2005 [B1ab(iii)]
Ceylonthelphusa durrelli Bahir & Ng, 2005 [B1ab(iii)] Ceylonthelphusa kandambyi Bahir, 1999
Ceylonthelphusa kotagama (Bahir, 1998) [B1ab(iii)]
Ceylonthelphusa nata Ng & Tay, 2001 [B1ab(iii)]
Ceylonthelphusa orthos Ng & Tay, 2001[B1ab(iii)] Ceylonthelphusa rugosa .. . . . .. . .. .. . . . . . . . Ceylonthelphusa savitriae Bahir & Ng, 2005 [B1ab(iii)] Ceylonthelphusa sentosa. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ceylonthelphusa soror . . . .. . . . . . . .. . . . . . . .. . . . Ceylonthelphusa sanguinea (Ng, 1995) [B1ab(iii)]
Ceylonthelphusa venusta (Ng, 1995). . . . . . . . . . . . . . . . . . Clinothelphusa kakoota Ng & Tay, 2001 [B1ab(iii)] . . . . Mahatha adonis Ng & Tay, 2001 . . . . . . . . . . . . . . . . . . . . Mahatha helaya Bahir & Ng, 2005 [B1ab(iii)]
Mahatha iora Ng & Tay, 2001 [B1ab(iii)]
Mahatha lacuna Bahir & Ng, 2005 [B1ab(iii)]
Mahatha ornatites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mahatha regina Bahir & Ng, 2005 [B1ab(iii)]. . . . . . . . . . . . . . . . Oziothelphusa ceylonensis (Fernando, 1960). . . . . . . . . . . . . . Oziothelphusa dakuna Bahir & Yeo, 2005 [B1ab(iii)] Oziothelphusa gallicola Bahir & Yeo, 2005 [B1ab(iii)] Oziothelphusa hippocastanum (Muller, 1887)... . Oziothelphusa intuta Bahir & Yeo, 2005 [B1ab(iii)] .. . ... . ... . .
Oziothelphusa kodagoda Bahir & Yeo, 2005 [B1ab(iii)] Oziothelphusa mineriyaensis . . .. . . .. . . .. . . .. . . Oziothelphusa populosa Bahir & Yeo, 2005 [B1ab(iii)] Oziothelphusa ritigala Bahir & Yeo, 2005 [B1ab(iii),D2] Oziothelphusa stricta Ng & Tay, 2001. . . . . . . . . .
Pastilla ruhuna Ng & Tay, 2001 [B1ab(iii)]. . . . .. . . . . Perbrinckia cracens Ng, 1995 [B1ab(iii)]
Perbrinckia enodis (Kingsley, 1880) [B1ab(iii)]
Perbrinckia fenestra Bahir & Ng, 2005 [B1ab(iii),D2] Perbrinckia fido Ng & Tay, 2001 [B1ab(iii)]
Perbrinckia gabadage Bahir & Ng, 2005 [B1ab(iii),D2]
Perbrinckia glabra Ng, 1995 [B1ab(iii),D2] . . . . . . . . . Perbrinckia integra Ng, 1995 . . . . . . . . . . . . . . . . . . . . . Perbrinckia morayensis Ng & Tay, 2001 [B1ab(iii)]
Perbrinckia nana (Bahir, 1999). . . . . .. . . .. . . . . . . . . Perbrinckia punctata Ng, 1995 [B1ab(iii)]
Perbrinckia quadratus Ng & Tay, 2002 [B1ab(iii)]
Perbrinckia rosae Bahir & Ng, 2005 [B1ab(iii)]
Perbrinckia scancor . . . . . . . . . . . . . . . . . . . . . . . . . . . Perbrinckia scitula Ng, 1995 [B1ab(iii).C(iii)]. . . . .. .
Perbrinckia uva Bahir, 1998 [B1ab(iii),D2] . . . . . . . . . . . . . .
Spiralothelphusa fernandoni Ng, 1994 [B1ab(iii)]
Spiralothelphusa parvula (Fernando, 1961) [B1ab(iii)]