New species of terrestrial molluscs (Caenogastropoda, Pupinidae & Pulmonata, Vertiginidae) of the Hon Chong – Ha Tien limestone hills, Southern Vietnam

Small limestone hills between the towns of Hon Chong and Ha Tien (Kien Giang Prov., Southwestern Vietnam) harbour a fauna of 65 species terrestrial molluscs, of which 36 are assumed to be endemic to the hills. Some occur on most hills of the group, others on a few, or even on a single hill only. Eight endemic taxa, new to science, are described here: 3 species of the new genus Notharinia (Pupinidae), viz. N. attenuata, N. brevior and N. crassilabris, and 5 taxa of the family Vertiginidae, viz. Acinolaemus carcharodon, Anauchen informis informis, Anauchen informis parcedentata, Aulacospira conica, and Montapiculus pyramidalis.