basis of recordBartsch, P. (1938). A synopsis of the Philippine land mollusks of the subgenus <i>Ryssota</i>. <em>Proceedings of the Biological Society of Washington.</em> 51: 101-119 [19 May]., available online athttps://www.biodiversitylibrary.org/page/34510092 page(s): 107-108 [details]