河口螺属

河口螺屬（學名：），又名埃列螺屬或金环螺属，是一類體型非常細小，而且很可能是兩棲的的属，有鳃和螺厣的半陸生腹足纲软体动物，是河口螺科物種裡的微小貝。

這些微細的蝸牛棲息於潮濕的環境，例如：腐爛的植被，而且距離海洋的邊沿很近。牠們能夠忍受當漲潮時被湧上岸的鹹水洗刷。Vaught (1989)把本屬物種列為淡水物種。

分佈
本屬物種分佈於日本沿海、香港、台灣、澳洲、印度、紐西蘭、阿拉伯、法國等地區。

分類學
威廉·托马斯·布兰福德於1867年建立本屬，當時屬於麂眼螺科。

物種
本屬物種計有：
 细纹河口螺
 Iravadia angulata (Laseron, 1956)
 Iravadia aristaei (Melvill, 1912)
 Iravadia atemeles (Melvill, 1912)
 柏衲埃列螺 Iravadia bombayana (Stoliczka, 1868)
 Iravadia capitata (Laseron, 1956)
 Iravadia carpentariensis (Hedley, 1912)
 Iravadia cochinchinensis (Bavay & Dautzenberg, 1910)
 Iravadia delicata (Philippi, 1849)
 Iravadia densilabrum (Melvill, 1912)
 † Iravadia dolini Lozouet, 2003Lozouet P. (2003). "A new species of Iravadia s.s. (Mollusca, Gastropoda, Iravadiidae) from the late Oligocene of the Aquitaine Basin (southern France). The earliest record of brackish-water Iravadiidae?". Geodiversitas 25(2): 237-242. PDF .
 Iravadia elongata (Hornung & Mermod, 1928)
 Iravadia expansilabrum Ponder, 1984
 Iravadia gemmata Ponder, 1984
 Iravadia goliath (Laseron, 1956)
 Iravadia ictriella (Melvill, 1910)
 Iravadia inflata (Ponder, 1967)
 锦绣埃列螺 Iravadia ornata Blanford, 1867：模式種
 Iravadia padangensis (Thiele, 1925)
 Iravadia pilbara Golding, 2014
 Iravadia profundior Ponder, 1984
 方格河口螺 Iravadia quadrasi (O. Boettger, 1893)
 Iravadia quadrina (Laseron, 1956)
 Iravadia rohdei (Brandt, 1968)
 Iravadia sublaevis (Laseron, 1956)
 Iravadia subquadrata (Laseron, 1950)
 Iravadia tenuilirata (Boettger, 1893)
 Iravadia yendoi (Yokoyama, 1927)
異名：
 Iravadia annandalei Preston, 1916: synonym of Iravadia ornata Blanford, 1867
 澳洲金環螺 Iravadia australis Hedley, 1900：今作Pellamora australis (Hedley, 1901)，屬皮拉螺屬。
 Iravadia bella (A. Adams, 1853): synonym of Iravadia delicata (Philippi, 1849)
 Iravadia elegantula (A. Adams, 1861): synonym of Fluviocingula elegantula (A. Adams, 1861)
 Iravadia ennurensis Preston, 1916: synonym of Iravadia ornata Blanford, 1867
 Iravadia funerea Preston, 1916: synonym of Iravadia ornata Blanford, 1867
 Iravadia mahimensis (Melvill, 1893): synonym of Pseudomerelina mahimensis (Melvill, 1893)
 环纹河口螺 Iravadia reflecta Laseron, 1956：今作Pellamora reflecta (Laseron, 1956)，屬皮拉螺屬。
 Iravadia nipponica (Kuroda & Habe, 1954): synonym of Fluviocingula nipponica Kuroda & Habe, 1954
 Iravadia princeps Preston, 1915: synonym of Iravadia ornata Blanford, 1867
 Iravadia resima (Laseron, 1956): synonym of Fluviocingula resima (Laseron, 1956)
 Iravadia reticulata Brandt, 1968: synonym of Iravadia quadrasi (O. Boettger, 1893)
 Iravadia sakaguchii (Kuroda & Habe, 1954): synonym of Wakauraia sakaguchii (Kuroda & Habe, 1954)
 Iravadia trochlearis (Gould, 1861): synonym of Stosicia annulata (Dunker, 1859)
 Iravadia tuberculata Brandt, 1974: synonym of Iravadia mahimensis (Melvill, 1893)

參考文獻

外部連結
 Ponder W. F. (1984) A review of the genera of the Iravadiidae (Gastropoda: Rissoacea) with an assessment of the relationships of the Family. Malacologia 25(1): 21-71