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&fist; They somewhat resemble myriapods, and have from seventeen
to thirty-three pairs of short, imperfectly jointed legs, two pairs
of simple jaws, and a pair of antennæ. The trancheæ are
connected with numerous spiracles scattered over the surface of the
body. Peripatus is the only known genus. See
Peripatus.

Mal`a*cop`ter*yg"i*an (?), n. [Cf. F.
malacoptérygien.] (Zoöl.) One of the
Malacopterygii.

||Mal`a*cop`te*ryg"i*i (?), n. pl.
[NL., fr. Gr. &?; soft + &?; wing, fin, fr. &?; feather.]
(Zoöl.) An order of fishes in which the fin rays,
except the anterior ray of the pectoral and dorsal fins, are closely
jointed, and not spiny. It includes the carp, pike, salmon, shad,
etc. Called also Malacopteri.

Mal`a*cop`ter*yg"i*ous (?), a.
(Zoöl.) Belonging to the Malacopterygii.

Mal`a*cos"te*on (?), n. [NL., Gr. fr.
&?; soft + &?; bone.] (Med.) A peculiar disease of the
bones, in consequence of which they become softened and capable of
being bent without breaking.


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