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development of mammalian molar teeth. The primitive stage is that of simple cones, as in reptiles. The simple cone then developed a smaller cone in front and another behind. Next, a cingulum was developed, and the three cones became arranged in a triangle, the two smaller cusps having moved to the outer side in upper…

A large iguanalike reptile (Sphenodon punctatum) formerly common in New Zealand, but now confined to certain islets near the coast. It reaches a length of two and a half feet, is dark olive- green with small white or yellowish specks on the sides, and has yellow spines along the back, except on the neck.…

ed in the form of urate of ammonia, it is the chief constituent of the urine of birds and reptiles, forming the white part. Traces of it are also found in the various organs of the body. It is likewise a common constituent, either as the free acid or as a urate, of urinary or renal calculi and of the so-called gouty co…

In mammals, a fluid excretion from the kidneys; in birds and reptiles, a solid or semisolid excretion.

e anal opening of certain invertebrates and fishes; also, the external cloacal opening of reptiles, birds, amphibians, and many fishes.

or state of being wary; care to foresee and guard against evil; cautiousness. "An almost reptile wariness." G. W. Cable. To determine what are little things in religion, great wariness is to be used. Sprat.

kled and highly colored, process of the skin hanging from the chin or throat of a bird or reptile.

Any small creeping animal or reptile, either entirely without feet, or with very short ones, including a great variety of animals; as, an earthworm; the blindworm. Specifically: (Zoöl.)

es may help to form it, and there may be two arches on each side of the skull, as in some reptiles. -- Zygomatic process, a process of the temporal or squamosal bone helping to form the zygomatic arch.