posterior nares

posterior nares

a pair of posterior internal openings in the nasal cavity connecting it with the nasopharynx and allowing the inhalation and exhalation of air. Each is an oval aperture that measures about 2.5 cm vertically and is about 1.5 cm in diameter. Also called choanae. Compare anterior nares.
References in periodicals archive ?
Anterior and posterior nares close to eye and to each other, internarial distance 7 to 13 times in snout length; anterior naris in short tube, posterior border of tube not reaching posterior naris when reflected; posterior naris oval, much larger than anterior naris, with long axis of oval running dorsoventrally.
The snout is orange, with the posterior nasal opening in a small white spot, a similar spot just in fron of the eye, a median white stripe from the anterior interorbital region to the level of the posterior nares and another similar short stripe from the posterior interorbital region over the dorsum.
habrum the thin vertical red bar over the ends of the hypurals in freshly collected specimens, but has an open nasal capsule lacking anterior and posterior nares (vs.

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