DESCRIPTION ON NEW SPECIES AND ZOOGEOGRAPHICAL ANALYSIS OF THE LAND MOLLUSKS FROM XISHUANGBANNA AND NEIGHBORING AREA, YUNNAN PROVINCE (GASTROPODA: PROSOBRANCHIA: ARCHAEOGASTROPDA, MESOGASTROPODA)

1Georissamenglunensissp.nov.(Fig.l)Holotype.Hight2.omm,breadth1.4mm;lengthofoperculumo.85mm,breadthofoperculumo.7Omm.Menglum,MenglaCounty(2l'O9'N,lOl'O2'E),YunnanProvince,China,July,27,l993.Paratypes:47specimens,hight2.2O-l.7Omm,breadthl.2O-1.55mm;lengthofapertureO.65-o.85mm,breadthofapertureO.7o-O.8Omm;Menglaun,MenglaCounty,YunnanProvince,China.July27,l993;May23,1994.TypespecimensaredepositedintheInstituteofZoologytheChineseAcademyofSci-ences,Beijing.1Shellsmall,thin.Whols47,we…