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he vena cava inferior. It directs the blood towards the left auricle in the fetus, but is rudimentary and functionless in the adult.

reduced to a small, early perishing body; and in seed plants it is usually microscopic or rudimentary.

A rudimentary form of crystallite, spherical in shape.

In ontogony, differentiation of male and female individuals from embryos having the same rudimentary sexual organs.

Balancers; the rudimentary hind wings of Diptera.

A winter bud, in which the rudimentary foliage or flower, as of most trees and shrubs in the temperate zone, is protected by closely overlapping scales.

sors, and two canine teeth, both above and below. The mares usually have the canine teeth rudimentary or wanting. The horse differs from the true asses, in having a long, flowing mane, and the tail bushy to the base. Unlike the asses it has callosities, or chestnuts, on all its legs. The horse excels in strength, speed…

ucing by instruction, or by the use and application of symbols or ceremonies; elementary; rudimentary. Some initiatory treatises in the law. Herbert. Two initiatory rites of the same general import can not exist together. J. M. Mason.

Containing the first principles or doctrines; elemental; rudimentary.

A division of amphipod Crustacea, in which the abdomen is small or rudimentary and the legs are often reduced to five pairs. The whale louse, or Cyamus, and Caprella are examples.

A small fishlike animal (Amphioxus lanceolatus), remarkable for the rudimentary condition of its organs. It is the type of the class Leptocardia. See Amphioxus, Leptocardia.

many insects are much like the adults in form and habits, but have no trace of wings, the rudimentary wings appearing only in the pupa stage. In other groups of insects the larvæ are totally unlike the parents in structure and habits, and are called caterpillars, grubs, maggots, etc.

A genus of airbreathing mollusks, including the common garden slugs. They have a small rudimentary shell. The breathing pore is on the right side of the neck. Several species are troublesome in gardens. See Slug.

ia, including the marsupials and monotremes; - - so called because the corpus callosum is rudimentary.

A glandular organ for secreting milk, characteristic of all mammals, but usually rudimentary in the male; a mammary gland; a breast; under; bag.

s inhabitants; as, the Manx language. Manx cat (Zoöl.), a breed of domestic cats having a rudimentary tail, containing only about three vertebrae. -- Manx shearwater (Zoöl.), an oceanic bird (Puffinus anglorum, or P. puffinus), called also Manx petrel, Manx puffin. It was formerly abundant in the Isle of Man.…

al allied genera. They are molelike in appearance and habits, and their eyes are small or rudimentary. -- Mole shrew (Zoöl.), any one of several species of short-tailed American shrews of the genus Blarina, esp. B. brevicauda. -- Water mole, the duck mole.

A genus of birds allied to the gallinules, but having rudimentary wings and incapable of flight. Notornis Mantelli was first known as a fossil bird of New Zealand, but subsequently a few individuals were found living on the southern island. It is supposed to be now nearly or quite extinct.

h regular annulations, and usually with minute scales imbedded in the skin. The limbs are rudimentary or wanting. It includes the cæcilians. Called also Gymnophiona and Ophidobatrachia.

aryngeal bone or cartilage; especially, one of the lower pharyngeals, which belong to the rudimentary fifth branchial arch in many fishes, or one of the upper pharyngeals, or pharyngobranchials, which are the dorsal elements in the complete branchial arches.