Testacella
（重定向自Testacellidae）
![](/Images/godic/202502/15/Testacella_haliotidea4442.jpg")
![Testacella maugei in the contracted state](/Images/godic/202502/15/Testacella_maugei4442.JPG")
![Drawing from 1896 showing the three species of Testacella found in Great Britain
1 - Testacella haliotidea
2 - Testacella scutulum
3 - Testacella maugei](/Images/godic/202502/15/Testacella4443.jpg")
Testacella is genus of small to medium-large, predatory, air-breathing, land slugs. They are terrestrial gastropod mollusks in the family Testacellidae, the shelled slugs. They are not often seen because they live underground.
Testacella is the only genus in the family, in other words it is a monotypic family. Testacella is the type genus of the family Testacellidae.