乳玉螺屬[1]:148（學名:Polinices），又名無臍玉螺屬，是玉黍螺類支序海螺的一個屬。舊屬玉螺亞科，現時獨立出來成為無臍玉螺亞科[2][3]。
物種
本屬連同異名有超過150個物種[4]。截至2018年4月27日[update]，WoRMS紀錄本屬的物種包括下列56個物種[4]：
- 扁球玉螺 Polinices albumen (Linnaeus, 1758)[1]:149－又名蛋白乳玉螺。產於台灣海峽，淺海底。
- Species Polinices alveatus (Troschel, 1852)
- Species Polinices amiculatus (Philippi, 1849)
- 桔色乳玉螺 Polinices aurantius (Röding, 1798)：又名黃金玉螺[3]。
- 雙線玉螺 Polinices bifasciatus Gray in Griffith & Pidgeon, 1833)
- 大白乳玉螺 Polinices candidissimus (Le Guillou, 1842)[1]:157
- Polinices chattonensis (Marwick, 1924) †
- Polinices citrinus (Philippi, 1851)
- Polinices cleistopsila Barnard, 1963
- Polinices constanti Huelsken & Hollmann, 2012
- Polinices cora (d'Orbigny, 1840)
- Polinices cumingianus (Récluz, 1844)
- 迸體乳玉螺 Polinices effusus (Swainson, 1840)[1]:153
- Species Polinices fallai (Fletcher, 1938) †
- 臍孔白玉螺 Polinices flemingianus (Récluz, 1844)：又名臍穴乳玉螺[1]:159、臍孔玉螺[3]。
- 棕色玉螺 Polinices fortunei Reeve, 1865－產於台灣北部海域，淺海泥底。
- Polinices grunerianus (Philippi, 1852)
- Polinices hacketti Marincovich, 1975
- 棕色玉螺 Polinices hepaticus (Röding, 1798)
- Polinices huttoni Ihering, 1907 †
- Polinices immaculatus (Totten, 1835)
- Polinices intemeratus (Philippi, 1853)
- Polinices intracrassus Finlay, 1924 †
- Polinices jukesii (Reeve, 1855)
- Polinices lacteus (Guilding, 1834)
- Polinices laxus (Finlay, 1926) †
- Polinices leptaleus (R. B. Watson, 1881)
- Polinices limi Pilsbry, 1931
- Polinices lobatus (Marwick, 1924) †
- Polinices mackayi Marwick, 1931 †
- 褐帶玉螺 Polinices mammatus (Roeding, 1798)－產於台灣海峽及台灣北部海域，淺海沙底。
- 梨形乳玉螺 Polinices mammilla (Linnaeus, 1758)[1]:157
- 白玉螺 Polinices mammilla (Linnaeus, 1758)：於台灣海峽及台灣北部海域，淺海沙底[3]。
- Species Polinices mediopacificus Kosuge, 1979
- 黑唇玉螺 Polinices melanostomus (Gmelin, 1791)－又名黑口乳玉螺。產於台灣北部及西南部，淺海沙底。
- Polinices mellosus (Hedley, 1924)
- Polinices mucronatus (Marwick, 1924) †
- Polinices oneroaensis Powell & Bartrum, 1929 †
- Polinices otaioensis Marwick, 1960 †
- Polinices otis (Broderip & G. B. Sowerby I, 1829)
- 包氏玉螺 Polinices powisiana (Recluz, 1844)－產於台灣海峽及台灣北部海域，淺海沙底。
- Polinices paciae Bozzetti, 1997
- Polinices panamaensis (Récluz, 1844)
- Polinices parki Finlay & Marwick, 1937 †
- Polinices parvulus Bozzetti, 2010
- Polinices perspicuus (Récluz, 1850)
- 包氏乳玉螺 Polinices peselephanti (Link, 1807)[1]:154
- Polinices powisianus (Récluz, 1844)
- Polinices propeovatus (Marwick, 1924) †
- Polinices psilus (R. B. Watson, 1886)
- Polinices putealis Garrard, 1961
- 胖玉螺 Polinices reiniana Dunker, 1877－產於台灣北部海域，淺海底。
- 白鼠玉螺 Polinices sebae (Recluz, 1844)－又名桑巴乳玉螺。產地未記錄（？）。
- 相模乳玉螺 Polinices sagamiensis Pilsbry, 1904[1]:153：又名相模灣玉螺[3]
- Polinices sagenus Suter, 1917 †
- 花帶玉螺 Polinices simiae (Deshayes, 1838)：產於台灣海峽，淺海沙底。
- Polinices tawhitirahia Powell, 1965
- Polinices uber (Valenciennes, 1832)
- Polinices uberinus (d'Orbigny, 1842)
- Polinices unisulcatus (Marwick, 1924) †
- Polinices vavaosi (Reeve, 1855)
- 絹帶乳玉螺 Polinices vestitus Kuroda, 1961[1]:151
- Polinices waipaensis (Marwick, 1924) †
- Polinices waipipiensis (Marwick, 1924) †
以下物種已不再屬於本屬：
參考文獻
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