ABSTRACT. Critical review of stylommatophoran mol- luscs of the fauna of Vietnam. The Check-list includes 477 species and subspecies (96 genera, 20 families). For every species (subspecies) references to original de- scription, synonymy, type locality (in original spelling) including synonyms, shell dimensions (for slugs – body length) and distributional data are given. In the end the index of mentioned molluscan names and the list of localities with geographic coordinates is placed. Introduction In XIX – beginning of XX centuries numerous species of terrestrial molluscs have been described from the territory of Vietnam. The most eminent researchers of the fauna of Indochina are A. Bavay, Ph. Dautzenberg, H. Fischer, P. Fischer, G. Gude, J. Mabille, O. Möllendorff, A. Morelet, L. Morlet and L. Pfeiffer. The first attempt to summarize the data on terrestrial malacofauna of Indo-China as a whole (Thailand, Laos, Cambodia, Vietnam) was made by P. Fischer [1891]. After full bibliography he listed 197 species names of land pulmonates. 15 years later H. Fischer and Ph. Dautzenberg [1904] pub- lished a Catalogue of land and freshwater mollusks of eastern Indo-China. This Catalogue includes 445 species and subspecies (or forms) of terrestrial snails and slugs. It should be mentioned also that in 1973 P.H. Fischer issued a list of shelled mollusks of Cambodia, where 63 species and subspecies of land pulmonates were indicated. Majority of species described at that time went under generic names Pupa, Buliminus (or Buli- mus), Clausilia, Helix, Nanina, or Streptaxis. Cur- rently, the systematics of Pulmonata becomes much more complex and number of genera is presently much higher. At the same time a problem arose: taxonomic position of many species is defined by their anatomical characters, whereas anatomy of majority of Vietnamese species is unknown; that is why I attributed many species in the definite genera just tentatively. The names of localities in the original descrip- tions are given in French, German or English, there- fore the spellings of the same localities sometimes are quite different; above all, many names of places have been changed since the time of description. So, in the text of the Check-list the spellings of the type localities are indicated exactly as in the original descriptions; in the rubric “Distribution” the names of places are given in their current spellings (or current names). In the end I placed the list of some localities where for ancient (or used by the authors) names, the current names are indicated, and for some of them the geographical coordinates are given. Similarly the dimensions are cited according to the original description. It should be also taken into consideration that in XIX and beginning of XX century the demarcation of boundaries between southern parts of China, Vietnam, Laos and Cambodia was vague, therefore such indications as “Cochinchina”, “Annam” and, sometimes, “Tonkin” could imply either (corre- spondingly) south Vietnam, central Vietnam and part of Laos, and north Vietnam, or adjacent territo- ries of Cambodia, Laos or southern China. Besides, some places indicated by the authors as, say, “Ton- kin”, is actually on the territory of, say, Laos. Above all, a number of populated places have the same or similar names, and in such cases it is impossible to establish, which of them the author meant. So, mistakes in indications of countries or places, un- fortunately, are inevitable. I would be grateful for indications of my mistakes. In the listed locations in “Distribution” section, the data are taken from sources mentioned in the synonymy; then, in a number of cases, after the colon (:), I indicate the distribution localities from material housed in the Naturhistorisches Museum Wien (NHMW) or Zoological Museum of Moscow State University (ZMMU). I would like to hope, that this Check-list will stimulate the further taxonomical investigation of the malacofauna of Indo-China, in particular, Viet- nam. Acknowledgments Many friends and colleagues helped me in many ways during the preparation of the manuscript. Particularly I would like to express my deep grati- tude to Dr. Bella Striganova, Dr. Alexander Anich- Check-list of land pulmonate molluscs of Vietnam (Gastropoda: Stylommatophora) A.A. SCHILEYKO A.N. Severtzov Institute of Problems of Evolution, Russian Academy of Sciences, Leninsky Prospect 33, Moscow 119071, RUSSIA. E-mail: asch@gol.ru Ruthenica, 2011, vol. 21, No. 1: 1-68. Published April 2011 © Ruthenica, 2011 http: www.ruthenica.com