Hemitoma is a genus of slit limpets, marine gastropod molluscs in the family Fissurellidae, the keyhole limpets and slit limpets.
In this genus of fissurellid, there is an inconspicuous notch at the anterior end of the shell rather than a slit. The notch is best seen in an interior view of the shell.
Species within the genus Hemitoma include:
Hemitoma australis (Quoy and Gaimard, 1832)
Hemitoma bella Gabb, 1865
According to the World Register of Marine Species (WoRMS) the following species names have been accepted
Hemitoma cumingii G.B. Sowerby II, 1863
Hemitoma imbricata (A. Adams, 1851)
Hemitoma octoradiata (Gmelin, 1791)
Hemitoma polygonalis (A. Adams, 1852)
The Indo-Pacific Molluscan Database also includes the following species with names in current use
Hemitoma arabica (A. Adams, 1852)
Hemitoma modesta (H. Adams, 1872)
Hemitoma subrugosa Thiele, 1916
Hemitoma simpla Christiaens, 1987
Subgenus Montfortia, Récluz, 1843
accepted as the genus
Montfortia Récluz, 1843
Hemitoma cratitia (A. Adams, 1852)
Subgenus Montfortista, Iredale, 1929
Hemitoma oldhamiana (Nevill, 1869)
Species brought into synonymy
Hemitoma emarginata (Blainville, 1825): synonym of Montfortia emarginata (Blainville, 1825)
Hemitoma excentrica (Iredale, 1929): synonym of Montfortista excentrica (Iredale, 1929)
Hemitoma hermosa Lowe, 1935: synonym of Montfortia hermosa (Lowe, 1935)
Hemitoma livescens (Reeve, 1865): synonym of Cellana livescens (Reeve, 1855)
Hemitoma natlandi Durham, 1950: synonym of Octomarginula natlandi (Durham, 1950)
Hemitoma panhi (Quoy & Gaimard, 1834): synonym of Montfortista panhi (Quoy & Gaimard, 1834)
Hemitoma profunda (Deshayes, 1863): synonym of Eoacmaea profunda (Deshayes, 1863)
Hemitoma rubida A.H. Verrill, 1850: synonym of Hemitoma octoradiata (Gmelin, 1791)
Hemitoma subemarginata (Blainville, 1819): synonym of Montfortia subemarginata (Blainville, 1819)
Hemitoma tricarinata (Born, 1778): synonym of Amathina tricarinata (Linnaeus, 1767)
