MALACOLOGY
Mal`a*col"o*gy, n. Etym: [Gr. -logy: cf. F. malacologie.]

Defn: The science which relates to the structure and habits of mollusks.

MALACOPODA
Mal`a*cop"o*da, n. pl. Etym: [NL., fr. Gr. -poda.] (Zoöl.)

Defn: A class of air-breathing Arthropoda; — called also
Protracheata, and Onychophora.

Note: 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.

MALACOPTERYGIAN
Mal`a*cop`ter*yg"i*an, n. Etym: [Cf. F. malacoptérygien.] (Zoöl.)

Defn: One of the Malacopterygii.

MALACOPTERYGII
Mal`a*cop`te*ryg"i*i, n. pl. Etym: [NL., fr. Gr. (Zoöl.)

Defn: 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.

MALACOPTERYGIOUS
Mal`a*cop`ter*yg"i*ous, a. (Zoöl.)