Diala

Diala is a genus of sea snails, marine gastropod mollusks in the family Dialidae.

Description
The whorls are not varicose, occasionally featuring nodules around the middle. The columella is relatively straight and not truncated. The outer lip is not thickened.

Species
Species within the genus Diala include:
 * Diala albugo (Watson, 1886)
 * Diala exilis (Tryon, 1866)
 * Diala lirulata Thiele, 1930
 * Diala megapicalis Ponder & de Keyzer, 1992
 * Diala pusilla Thiele, 1930
 * Diala semistriata (Philippi, 1849) - type species as Diala varia Adams A., 1861
 * Diala stephensae (Baker, Hanna & Strong, 1930)
 * Diala sulcifera (A. Adams, 1862) - synonym: Diala flammea (Pease, 1868)
 * Diala suturalis (A. Adams, 1863) - synonym: Diala lauta (Adams)
 * Diala virgata Hedley, 1899 (taxon inquirendum)


 * Species brought into synonymy:
 * Diala acuta Carpenter, 1864 : synonym of Pseudodiala acuta (Carpenter, 1864)
 * Diala africana Bartsch, 1915 : synonym of Diala almo Bartsch, 1915
 * Diala almo Bartsch, 1915 : synonym of Hydrobiidae incertae sedis almo (Bartsch, 1915) (original combination)
 * Diala basispiralis (Chapman-Smith & Grant-Mackie, 1971) : synonym of Diala semistriata (Philippi, 1849)
 * Diala cacuminata Laseron, 1956 : synonym of Diala semistriata (Philippi, 1849)
 * Diala capensis G. B. Sowerby III, 1889 : synonym of Alaba pinnae (Krauss, 1848)
 * Diala conica Turton, 1932 : synonym of Diala semistriata (Philippi, 1849)
 * Diala cornea A. Adams, 1861 : synonym of Alaba cornea (A. Adams, 1861)
 * Diala diffilata Laseron, 1956 : synonym of Alaba diffilata (Laseron, 1956)
 * Diala electrina Carpenter, 1864 : synonym of Lirobarleeia Ponder, 1983
 * Diala flammea Pease, 1868 : synonym of Diala sulcifera (A. Adams, 1862)
 * Diala fragilis Thiele, 1930 : synonym of Alaba fragilis (Thiele, 1930)
 * Diala fuscopicta E. A. Smith, 1890 : synonym of Barleeia fuscopicta (E. A. Smith, 1890)
 * Diala hartmeyeri Thiele, 1930 : synonym of Alaba hartmeyeri (Thiele, 1930)
 * Diala infrasulcata G.B. Sowerby III, 1892 : synonym of Diala semistriata (Philippi, 1849)
 * Diala lauta (Adams, 1862) : synonym of Diala suturalis (A. Adams, 1863)
 * Diala leithii (E. A. Smith, 1876) : synonym of Mainwaringia leithii (E. A. Smith, 1876)
 * Diala lirata Laseron, 1950 : synonym of Diffalaba opiniosa Iredale, 1936
 * Diala ludens Melvill & Standen, 1895 : synonym of Diala albugo (Watson, 1886)
 * Diala macula Nevill, 1885 : synonym of Diala varia A. Adams, 1861 : synonym of Diala semistriata (Philippi, 1849)
 * Diala marmorea Carpenter, 1864 : synonym of Pseudodiala acuta (Carpenter, 1864)
 * Diala pinnae (Krauss, 1848) : synonym of Alaba pinnae (Krauss, 1848)
 * Diala planalba Laseron, 1956 : synonym of Diala semistriata (Philippi, 1849)
 * Diala polita Preston, 1905 : synonym of Diala semistriata (Philippi, 1849)
 * Diala simplex E. A. Smith, 1875 : synonym of Barleeia simplex (E. A. Smith, 1875)
 * Diala stricta Habe, 1960 : synonym of Diala semistriata (Philippi, 1849)
 * Diala tesselata Tenison-Woods, 1876 : synonym of Alaba monile A. Adams, 1862
 * Diala translucida Hedley, 1905 : synonym of Styliferina translucida (Hedley, 1905)
 * Diala trilirata Melvill, 1906 : synonym of Diala semistriata (Philippi, 1849)
 * Diala varia Adams A., 1861 : synonym of Diala semistriata (Philippi, 1849)
 * Diala vestigia Laseron, 1956 : synonym of Diala semistriata (Philippi, 1849)
 * Diala vitrea G. B. Sowerby III, 1915 : synonym of Diffalaba vitrea (G. B. Sowerby III, 1915)
 * Diala watsoni Laseron, 1956 : synonym of Diala semistriata (Philippi, 1849)


 * Taxa inquirenda:
 * † Diala angustifera Nomura, 1935
 * Diala fragilis (Fenaux, 1943)
 * Diala lirata H. Adams & A. Adams, 1864
 * Diala nodicincta H. Adams & A. Adams, 1864
 * Diala succincta A. Adams, 1870 (unassessed, use in recent literature not established by editor)