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Webster 1913 Edition
Trachystomata
‖
Traˊchy-stom′a-ta
,Noun.
pl.
[NL., fr. Gr. [GREEK] 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.