Tra`chy*stom"a*ta (?), n. pl. [NL.,fr.Gr. rough + stoma.] Zool.

An order of tailed aquatic amphibians, including Siren and Pseudobranchus. They have anterior legs only, are eel-like in form, and have no teeth except a small patch on the palate. The external gills are persistent through life.


© Webster 1913.

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