In this paper we describe a new species, Georissa mawsmaiensis sp. nov., from Mawsmai cave, a limestone cave of Mawsmai village, Meghalaya, Northeast India. It is compared with its closest congener, Georissa saritta (Benson, 1851), which was also collected and described from the same area (Musmai [Present Mawsmai] valley, near Cherrapunjee). Unlike G. saritta, however, the new species is found to be distinct in its conchological features which include prominent spiral striation and few spiral striae on the body whorl (i.e., 4 in the new species and 7 in G. saritta). A detailed morphological comparison with the other congeners is also provided here.