Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Spiraxis is a genus of land snails in the family Spiraxidae. Spiraxis is the type genus of family Spiraxidae. Spiraxidae is a family of air-breathing land snails, terrestrial pulmonate gastropods in the clade Eupulmonata (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).The Spiraxidae family is classified within the informal group Sigmurethra, itself belonging to the clade Stylommatophora within the clade Eupulmonata (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).