Echinix is a genus of air-breathing land semi-slugs.

[1] Echinix is the only genus in the subfamily Echinichinae,[1] terrestrial pulmonate gastropod mollusks in the superfamily Xanthonychoidea.

[1] The subfamily Echinichinae is endemic to states Tamaulipas and Querétaro in northeastern Mexico.

[1] Species in the genus Echinix include: Species in the genus Echinix are semi-slugs, which have their shells completely hidden under the mantle.

[1] There are numerous glandular papillae on the dorsal part of the body.