clade Eupulmonata clade Stylommatophora Pupilla is a genus of minute air-breathing land snails, terrestrial pulmonate gastropod mollusks or micromollusks in the family Pupillidae. The genus Pupilla is known from the Oligocene to the Recent period. == Distribution == This genus occurs in Europe, northern Africa and North America. Pupilla has severa... Found on http://en.wikipedia.org/wiki/Pupilla
pupilla (s), pupillae (pl) The central orifice of the iris through which light enters the eye; the pupil. Its size is regulated by the sphincter and dilator muscles of the iris. Found on http://www.wordinfo.info/words/index/info/view_unit/1799/