Additions to the knowledge of the land snails of Sabah (Malaysia, Borneo), including 48 new species

89 Geotrochus kitteli sp. n. Frontal view, shell 5.5 mm high (Malaysia, Sabah, West Coast Province, Kinabalu N.P., Headquarters area, Silau Silau (RMNH.5003930, holotype) 90 Geotrochus whiteheadi (E.A. Smith, 1895) 90A Frontal view, shell 5.5 mm high 90B Umbilical view (Malaysia, Sabah, West Coast Province, Kinabalu N.P., Carson’s Falls, V 12710) 91 Geotrochus subscalaris sp. n. Frontal view, shell 7.0 mm high (Malaysia, Sabah, Sandakan Province, Kinabatangan valley, Batu Pangi, RMNH.5003931, holotype) 92 Geotrochus meristotrochus sp. n. 92A Frontal view, shell 7.0 mm high 92B Umbilical view (Malaysia, Sabah, Interior Province, Sepulut valley, Batu Punggul, RMNH.5003932, holotype).