Apoda
in zoölogy (1) Aristotle's third section of zoötoka, or air-breathing vivipara. It included the whales, which the Stagirite, with remarkable scientific accuracy, ranked with the warm-blooded quadrupeds; (2) the second order of the class amphibia, or batrachia. The body is like that of an earthworm, and is quite destitute of feet. The order contains but one family, the cæcilindæ; (3) according to Prof. Max Müller, a group of fishes belonging to the sub-order physostomata. It is so called because the ventral fins are wanting. It contains three families, the murænidæ, or eels, the gymnotidæ, and the symbranchidæ.