# Euhadra

Euhadra is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Bradybaeninae of the family Camaenidae.
(This snail genus was previously placed in the family Eulotidae).
A few of the species in this genus are unusual in that specimens in those species always have left-handed "sinistral" coiling in their shells, as shown in the specimen on the right. The rest of the species in the genus are right-handed or "dextral" in the shell coiling, as is usually the case in the great majority of gastropods.

## Distribution

These snails are almost endemic to Japan, but one of them are distributed in Korea.

## Species

Most species in this genus have a dextral shell and 5 species are sinistral.

### Dextral species

Dextral species in the genus Euhadra include:
* Euhadra amaliae (Kobelt, 1875)
* Euhadra awaensis (Pilsbry, 1902)
* Euhadra brandtii (Kobelt, 1875)
* Euhadra callizona (Crosse, 1871)
* Euhadra caspari (Möllendorff, 1884)
* Euhadra cecillei (Philippi, 1849)
* Euhadra congenita (E. A. Smith, 1878)
* Euhadra cyclolabris Möllendorff, 1899
* Euhadra dixoni (Pilsbry, 1900)
* Euhadra eoa (Crosse, 1868)
* Euhadra granulifera (Möllendorff, 1888)
* Euhadra herklotsi (Martens, 1861)
* Euhadra idzumonis (Pilsbry & Gulick, 1900)
* Euhadra kunoensis Kuroda in Masuda & Habe, 1989
* Euhadra latispira (Pilsbry & Hirase, 1909)
** Euhadra latispira yagurai Kuroda & Habe, 1949 Archived 8 January 2009 at the Wayback Machine
* Euhadra luhuana (G. B. Sowerby I, 1839)
* Euhadra moreletiana (Heude, 1882)
* Euhadra nachicola Kuroda, 1929
* Euhadra nesiotica (Pilsbry, 1902)
* † Euhadra pachya (Pilsbry, 1902)
* Euhadra peliomphala (L. Pfeiffer, 1850)
* Euhadra sadoensis (Pilsbry & Y. Hirase, 1903)
* Euhadra sandai (Kobelt, 1879)
* Euhadra schmackeri (Möllendorff, 1888)
* Euhadra senckenbergiana (Kobelt, 1875)
** Euhadra senckenbergiana aomoriensis (Gulick & Pilsbry, 1900)
** Euhadra senckenbergiana ibukicola
** Euhadra senckenbergiana notoensis
** Euhadra senckenbergiana minoensis
** Euhadra senckenbergiana senckenbergiana
* Euhadra sigeonis Kuroda, 1944
* Euhadra subnimbosa (Kobelt, 1894)
* † Euhadra takarajimana M. Azuma & Y. Azuma, 1985
* Euhadra tokarainsula Minato & Habe, 1982
* Euhadra yakushimana (Pilsbry & Hirase, 1903)
* Euhadra senckenbergiana aomoriensis
* Euhadra senckenbergiana aomoriensis
* Euhadra senckenbergiana ibukicola
* Euhadra senckenbergiana senckenbergiana

### Sinistral species

Sinistral species in the genus Euhadra include:
* Euhadra decorata (Pilsbry & Hirase, 1903)
* Euhadra grata (Gude, 1900)
** Euhadra grata echigoensis Murayama, Takizawa & Habe, 1991
* Euhadra murayamai Habe, 1976
* Euhadra quaesita (Deshayes, 1850), Sought-after False Hadra
* Euhadra scaevola (Martens, 1877)

#### Species brought into synonymy

* Euhadra amphidroma Möllendorff, 1899: synonym of Trichocathaica amphidroma (Möllendorff, 1899) (original combination)
* Euhadra carphochroa Möllendorff, 1899: synonym of Bradybaena carphochroa (Möllendorff, 1899) (original combination)
* Euhadra eris Möllendorff, 1899: synonym of Bradybaena eris (Möllendorff, 1899) (original combination)
* Euhadra halpozona Möllendorff, 1899: synonym of Bradybaena halpozona (Möllendorff, 1899) (original combination)
* Euhadra hickonis Kobelt, 1879: synonym of Euhadra congenita (E. A. Smith, 1878) (junior synonym)
* Euhadra iwadensis Toba & Kuroda, 1936: synonym of Euhadra decorata decorata (Pilsbry & Hirase, 1903) (junior synonym)
* Euhadra kanmuriensis Azuma & Tada, 1969: synonym of Euhadra sandai communis Pilsbry, 1928 (junior synonym)
* Euhadra kanoi Kuroda, 1932: synonym of Nesiohelix kanoi (Kuroda, 1932) (original combination)
* Euhadra koreana (L. Pfeiffer, 1850): synonym of Fruticicola koreana (L. Pfeiffer, 1850)
* Euhadra micromphala Möllendorff, 1899: synonym of Bradybaena micromphala (Möllendorff, 1899) (original combination)
* Euhadra pekanensis H. Rolle, 1911: synonym of Satsuma pekanensis (H. Rolle, 1911) (original combination)
* Euhadra pseudocampylaea Möllendorff, 1899: synonym of Bradybaena pseudocampylaea (Möllendorff, 1899) (original combination)
* Euhadra pseudopapuina Möllendorff, 1901: synonym of Aegista pseudopapuina (Möllendorff, 1901) (original combination)
* Euhadra strauchiana Möllendorff, 1899: synonym of Bradybaena strauchiana (Möllendorff, 1899) (original combination)
* Euhadra strictotaenia Möllendorff, 1899: synonym of Bradybaena strictotaenia (Möllendorff, 1899) (original combination)
* Euhadra tenuitesta Möllendorff, 1899: synonym of Bradybaena tenuitesta (Möllendorff, 1899) (original combination)
* Euhadra tobai S. Hirase, 1929: synonym of Euhadra decorata decorata (Pilsbry & Hirase, 1903) (junior synonym)
* Euhadra tokarana Azuma, 1982: synonym of Euhadra tokarainsula tokarainsula Minato & Habe, 1982