There are over 270 species within the land snail genus Amphidromus.. The precise number is subject to change due to ongoing taxonomic revisions
These species used to be divided into three subgenera:, They are all accepted as an alternate representation subgenus Amphidromus Albers, 1850 subgenus Goniodromus Bülow, 1905: The shell closely resembles that of Amphidromus, differing primarily in the aperture: rather than being uniformly rounded, the extension of the columella forms an angular spout with the anterior lip, analogous to the siphonal canal found in marine gastropods. subgenus Syndromus Pilsbry, 1900:Pilsbry H. A. (1900). Manual of Conchology, Structural and Systematic, with Illustrations of the Species, Second Series, Volume 13. Academy of Natural Sciences, Philadelphia. page 184. all species of the subgenus Syndromus are sinistral with two exceptions: amphidromine Amphidromus glaucolarynx and dextral Amphidromus kuehni.
Amphidromus abbasi Chan & Tan, 2010Chan S.-Y. & Tan S.-K. (2008). "On a new species of Amphidromus (Syndromus) (Gastropoda: Pulmonata: Camaenidae) from Sumba Island, Indonesia". Occasional Molluscan Papers 1: 6-10. PDF , Internet ArchiveChan S.-Y. & Tan S.-K. (2010). "On two new species of Amphidromus (Gastropoda: Camaenidae) from the Lesser Sunda Islands, Indonesia" The Raffles Bulletin of Zoology 58(2): 245-249. PDF . Amphidromus abbasorum Thach, 2017 Amphidromus abbotthuberorum Thach, 2017 Amphidromus adamsii (Reeve, 1848) Amphidromus agnieszkae Thach, 2020 Amphidromus alfi Thach, 2020 Amphidromus alicetandiasae Parsons, 2016Parsons J. (2016). "A new species of Amphidromus (Syndromus) (Gastropoda: Pulmonata: Camaenidae) from Mount Selerong, southern East Kalimantan, Indonesia". Gloria Maris 55(1): 9-16. Amphidromus alicjaboronae Thach, 2021 Amphidromus alticola Fulton, 1896 Amphidromus ameliae Dharma, 2007 Amphidromus andamanicus (Hanley & Theobald, 1876) Amphidromus angulatus Fulton, 1896 Amphidromus anhdaoorum Thach, 2017 Amphidromus anhduongae Thach, 2020 Amphidromus annae E. von Martens, 1891 Amphidromus anthonyabbotti Thach & F. Huber, 2017 Amphidromus areolatus (Pfeiffer, 1861) Amphidromus arlingi Thach, 2017 Amphidromus asperoides Jirapatrasilp & C.-T. Lee, 2024 Amphidromus atricallosus (Gould, 1843) Amphidromus aureocinctus Fulton, 1896 Amphidromus backeljaui Thach, 2020 Amphidromus baili Thach, 2020 Amphidromus banksi Butot, 1955 Amphidromus baoi Thach, 2017 Amphidromus baolocensis Thach & F. Huber, 2016Thach N. N. (2016). Vietnamese new mollusks. Seashells – Land snails – Cephalopods. With 59 new species. 205 pp. Published by the author, pages 62-63. Amphidromus basilanensis Bartsch, 1917 Amphidromus bataviae (Grateloup, 1840) Amphidromus beccarii (Tapparone Canefri, 1883) Amphidromus begini (Morlet, 1886) Amphidromus bernardfamyi Thach, 2017 Amphidromus binhduongensis Thach & F. Huber, 2021 Amphidromus binhphuocensis Thach, 2019 Amphidromus boroni Thach, 2020 Amphidromus bozhii Y.C. Wang, 2019 Amphidromus bramvanderbijli Thach, 2019 Amphidromus buelowi Fruhstorfer, 1905 Amphidromus buluanensis Bartsch, 1917 Amphidromus cambojiensis (Reeve, 1860) Amphidromus capistratus E. von Martens, 1903 Amphidromus centrocelebensis Bollinger, 1918 Amphidromus chengweii Thach, 2023 Amphidromus cochinchinensis (Pfeiffer, 1857) Amphidromus coeruleus Clench & Archer, 1932 Laidlaw F. F. & Solem A. (1961). "The land snail genus Amphidromus: a synoptic catalogue". Fieldiana Zoology 41(4): 505-720. Amphidromus cognatus Fulton, 1907 Amphidromus columellaris Möllendorff, 1892 Amphidromus comes (Pfeiffer, 1861) Amphidromus consobrinus Fulton, 1897 Amphidromus contrarius (O.F. Müller, 1774) - the type species of the subgenus Syndromus Amphidromus cossignanii Thach, 2021 Amphidromus costiferE. A. Smith, 1893 Amphidromus crassus Fulton, 1899 Amphidromus cruentatus (Morelet, 1875) Amphidromus dambriensis Thach & F. Huber, 2016 (taxon inquirendum, debated synonym) Amphidromus dancei Dharma, 2021 Amphidromus daoae Thach, 2016 Amphidromus dautzenbergi Fulton, 1899 Amphidromus davidberschaueri Thach, 2021 Amphidromus dekkeri Thach, 2021 Amphidromus delsaerdti Thach, 2016 Amphidromus djajasasmitai Dharma, 1993 Amphidromus dohrni (L. Pfeiffer, 1864) Amphidromus donchani Thach, 2019 Amphidromus dubius Fulton, 1896 Amphidromus duboismercesylviae Thach & F. Huber, 2020 Amphidromus dungae Thach, 2021 Amphidromus elviae Dharma, 2007 Amphidromus elvinae Dharma, 2007 Amphidromus enganoensis Fulton, 1896 Amphidromus entobaptus Dohrn, 1889 Amphidromus epidemiae Y.-C. Wang, 2021 Amphidromus escondidus Poppe, 2020 Amphidromus eudeli Ancey, 1897 (taxon inquirendum, debated synonym) Amphidromus everetti Fulton, 1896 Amphidromus feliciae Thach & Abbas, 2020 Amphidromus felixi Dharma, 2021 Amphidromus fengae Y.C. Wang, 2019 Amphidromus filozonatus (E. von Martens, 1867) Amphidromus flavus (L. Pfeiffer, 1861) Amphidromus floresianus Fulton, 1897 Amphidromus frednaggsi Thach & F. Huber, 2018 Amphidromus friedahuberae Thach & F. Huber, 2017 Amphidromus fultoni Ancey, 1897 Amphidromus furcillatus (Mousson, 1849) Amphidromus gattingeri Thach & F. Huber, 2020 Amphidromus gerberi Thach & F. Huber, 2017 (taxon inquirendum, debated synonym) Amphidromus gisellelieae Thach & Abbas, 2022 Amphidromus givenchyi Geret, 1912 Amphidromus glaucolarynx (Dohrn, 1861) Amphidromus globonevilli Sutcharit & Panha, 2015 Amphidromus grohi Thach, 2021 Amphidromus gustafi Thach & F. Huber, 2020 Amphidromus haematostoma Möllendorff, 1898 Amphidromus hamatus Fulton, 1896 Amphidromus harryleei Thach, 2020 Amphidromus hassi Thach & F. Huber, 2018 (taxon inquirendum, debated synonym) Amphidromus haszprunari Thach, 2020 Amphidromus heerianus (L. Pfeiffer, 1871) Amphidromus heinrichhuberi Thach & F. Huber, 2016 Amphidromus hejingi Thach, 2019 Amphidromus herosae Thach, 2021 Amphidromus hildagoi Bartsch, 1917 Amphidromus hongdaoae Thach, 2017 Amphidromus hosei E. A. Smith, 1895 (taxon inquirendum) Amphidromus huanganhi Thach, 2020 Amphidromus huberi Thach, 2014 Amphidromus huynhanhi Thach, 2019 Amphidromus huynhi Thach, 2019 Amphidromus ilsa B. Rensch, 1933 Amphidromus inconstans Fulton, 1898 Amphidromus inflatus Fulton, 1896 Amphidromus ingens Möllendorff, 1900 Amphidromus ingensoides Jirapatrasilp & C.-T. Lee, 2024 Amphidromus inversus (Müller, 1774) Amphidromus iunior Cilia, 2013Cilia D. P. (2013). "Description of a new species of Amphidromus Albers, 1850 from Sumba, Indonesia (Gastropoda Pulmonata Camaenidae)". Biodiversity Journal 4(2): 263-268. PDF. Amphidromus jacobsoni Laidlaw, 1954 Amphidromus jadeni Thach, 2021 Amphidromus janus (L. Pfeiffer, 1854) Amphidromus javanicus (G.B. Sowerby I, 1833) Amphidromus jeffabbasorum Thach, 2016 Amphidromus jomi Dumrongrojwattana, Wongkamhaeng & Tanamai, 2019 Amphidromus jonabletti Thach, 2019 Amphidromus juliekeppensae Thach, 2021 Amphidromus kalaoensis Fulton, 1896 Amphidromus kantori Thach & F. Huber, 2020 Amphidromus keppensdhondtorum Thach, 2018 Amphidromus khammouanensis Thach & F. Huber, 2017 Amphidromus khoatuanorum Thach, 2021 Amphidromus kiati Thach, 2020 Amphidromus koenigi Thach & F. Huber, 2018 Amphidromus koonpoi Thach & F. Huber, 2018 (taxon inquirendum - debated synonym) Amphidromus kruijti P. Sarasin & S. Sarasin, 1899 Amphidromus kuehni Möllendorff, 1902 - This is the only dextral species in the subgenus Syndromus. Amphidromus kvuongi Segers, 2023 Amphidromus laevus (O. F. Müller, 1774) Amphidromus laii Thach, 2019 Amphidromus laosianus Bavay, 1898 Amphidromus latestrigatus M.M. Schepman, 1892 Amphidromus ledaoae Thach, 2016 Amphidromus leeanus Thach, 2021 Amphidromus lepidus (Gould, 1856) Amphidromus leucoxanthus (E. von Martens, 1864) Amphidromus liei Thach, 2017 Amphidromus lilianaboronae Thach, 2021 Amphidromus lindstedti (L. Pfeiffer, 1857) Amphidromus loanphungae Thach, 2020 Amphidromus loricatus (L. Pfeiffer, 1855) Amphidromus luangensis Gra-tes, 2015 Gra-tes C. (2015). "Two new * And one new subspecies of Amphidromus (Gastropoda: Camaenidae) from Thailand". The Festivus 47(3): 151-166. Amphidromus maculatus Fulton, 1896 Amphidromus maculiferus (G. B. Sowerby I, 1838) Amphidromus madelineae Thach, 2020 Amphidromus marekboroni Thach, 2021 Amphidromus mariaeThach & F. Huber, 2017 Amphidromus mariani Thach, 2024 Amphidromus mariasendersae Thach & F. Huber, 2017 Amphidromus marki Thach, 2021 Amphidromus markpankowskii Thach, 2020 Amphidromus martensi Boettger, 1894 Amphidromus maryae Thach, 2021 Amphidromus masoni (Godwin-Austen, 1876) Amphidromus maxi Thach, 2020 Amphidromus melanomma (L. Pfeiffer, 1852) Amphidromus melindae Thach, 2023 Amphidromus metabletus Möllendorf, 1900 Amphidromus mindoroensis Bartsch, 1917 (taxon inquirendum) Amphidromus mingmini Thach, 2019 Amphidromus minhthaoae Thach, 2020 Amphidromus mirandus Bavay & Dautzenberg, 1912 Amphidromus moniliferus (Gould, 1846) Amphidromus monsecourorum Thach & F. Huber, 2017 Amphidromus mouhoti (Pfeiffer, 1861) Amphidromus multicolor Möllendorff, 1893 Amphidromus mundus (L. Pfeiffer, 1853) Amphidromus ngai Thach, 2019 Amphidromus nganguyeni Thach, 2021 Amphidromus ngocae Thach, 2021 Amphidromus ngocanhi Thach, 2017 Amphidromus nguyetminhae Thach, 2020 Amphidromus niasensis Fulton, 1907 Amphidromus nicoasiarum Thach, 2021 Amphidromus nicoi Thach, 2017 Amphidromus noviae Thach, 2024 Amphidromus palaceus (Mousson, 1848) Amphidromus pankowskianus Thach, 2020 Amphidromus pankowskiorum Thach, 2021 Amphidromus parsonsi Thach, Abbas & Lie, 2024 Amphidromus patbaili Thach & F. Huber, 2021 Amphidromus pattinsonae Iredale, 1943 Amphidromus perrieri A. de Rochebrune, 1882 (taxon inquirendum, usage in recent literature undocumented) Amphidromus persimilis J. Parsons, 2019 Amphidromus perversus (Linnaeus, 1758) - the type species of the genus Amphidromus Amphidromus petestimpsoni Thach, 2021 Amphidromus phamanhi Thach, 2016 Amphidromus phamanhorum Thach, 2021: (taxon inquirendum, debated synonym) Amphidromus phamtuanhae Thach, 2021 Amphidromus phamvutuanhae Thach, 2022 Amphidromus philippeboucheti Thach, 2019 Amphidromus pictus Fulton, 1896 Amphidromus pisororum Thach, 2023 Amphidromus placidus Fulton, 1896 Amphidromus placostylus Möllendorff, 1900 Amphidromus poecilochroa Fulton, 1896 Amphidromus poppei Thach, 2020 Amphidromus porcellanus (Mousson, 1849) Amphidromus principalis Sutcharit & Panha, 2015 Amphidromus protania Lehmann & Maassen, 2004 Amphidromus psephos Vermeulen, T.-S. Liew & Schilthuizen, 2015 Amphidromus puspae Dharma, 1993 Amphidromus qiongensis J. He & Q.-H. Zhou, 2017 Amphidromus quadrasi Hidalgo, 1887 Amphidromus quangtrungi Thach, 2021 Amphidromus reflexilabris Schepman, 1892Nguyen Ngoc Thach, Amphidromus chrisabbasi, a new species (Gastropoda: Camaenidae) from Indonesia, The Festivus 49 (3), August 2017 Amphidromus reuselaarsi Thach, 2018 Amphidromus rhodostylus Möllendorff, 1901 Amphidromus richardi Severns, 2006 Amphidromus ristiae Dharma, 2007 Amphidromus robustus Fulton, 1896 Amphidromus roeseleri Möllendorff, 1894 Amphidromus rosalindae Thach & Abbas, 2023 Amphidromus roseolabiatus Fulton, 1896 Amphidromus rottiensis Chan & Tan, 2010Chan S.-Y., Tan S.-K. & Abbas J. B. (2008). "On a new species of Amphidromus (Syndromus) (Gastropoda: Pulmonata: Camaenidae) from Rotti Island, Indonesia". Occasional Molluscan Papers 1: 1-5. PDF , Internet Archive Amphidromus sancangensis Dharma, 2007 Amphidromus sandersae Thach & F. Huber, 2020 Amphidromus schomburgki (Pfeiffer, 1860) Amphidromus sekincauensis Dharma, 2007 Amphidromus semifrenatus E. von Martens, 1900 Amphidromus semitessellatus (Morlet, 1884) Amphidromus setzeri Thach, 2015 (taxon inquirendum) Amphidromus severnsi Thach, 2017 (taxon inquirendum, debated synonym)